diff --git a/alembic/versions/c1f9ee875616_command_stats_github_links.py b/alembic/versions/c1f9ee875616_command_stats_github_links.py
new file mode 100644
index 0000000..3ef4b9f
--- /dev/null
+++ b/alembic/versions/c1f9ee875616_command_stats_github_links.py
@@ -0,0 +1,54 @@
+"""Command stats & GitHub links
+
+Revision ID: c1f9ee875616
+Revises: b84bb10fb8de
+Create Date: 2022-09-20 17:18:02.289593
+
+"""
+import sqlalchemy as sa
+
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision = "c1f9ee875616"
+down_revision = "b84bb10fb8de"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table(
+        "command_stats",
+        sa.Column("command_stats_id", sa.Integer(), nullable=False),
+        sa.Column("command", sa.Text(), nullable=False),
+        sa.Column("timestamp", sa.DateTime(timezone=True), nullable=False),
+        sa.Column("user_id", sa.BigInteger(), nullable=True),
+        sa.Column("slash", sa.Boolean(), nullable=False),
+        sa.Column("context_menu", sa.Boolean(), nullable=False),
+        sa.ForeignKeyConstraint(
+            ["user_id"],
+            ["users.user_id"],
+        ),
+        sa.PrimaryKeyConstraint("command_stats_id"),
+    )
+    op.create_table(
+        "github_links",
+        sa.Column("github_link_id", sa.Integer(), nullable=False),
+        sa.Column("url", sa.Text(), nullable=False),
+        sa.Column("user_id", sa.BigInteger(), nullable=True),
+        sa.ForeignKeyConstraint(
+            ["user_id"],
+            ["users.user_id"],
+        ),
+        sa.PrimaryKeyConstraint("github_link_id"),
+        sa.UniqueConstraint("url"),
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table("github_links")
+    op.drop_table("command_stats")
+    # ### end Alembic commands ###
diff --git a/database/crud/command_stats.py b/database/crud/command_stats.py
new file mode 100644
index 0000000..000eebe
--- /dev/null
+++ b/database/crud/command_stats.py
@@ -0,0 +1,41 @@
+from datetime import datetime
+from typing import Optional, Union
+
+from discord import app_commands
+from discord.ext import commands
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from database.crud.users import get_or_add_user
+from database.schemas import CommandStats
+
+__all__ = ["register_command_invocation"]
+
+
+CommandT = Union[commands.Command, app_commands.Command, app_commands.ContextMenu]
+
+
+async def register_command_invocation(
+    session: AsyncSession, ctx: commands.Context, command: Optional[CommandT], timestamp: datetime
+):
+    """Create an entry for a command invocation"""
+    if command is None:
+        return
+
+    await get_or_add_user(session, ctx.author.id)
+
+    # Check the type of invocation
+    context_menu = isinstance(command, app_commands.ContextMenu)
+
+    # (This is a bit uglier but it accounts for hybrid commands)
+    slash = isinstance(command, app_commands.Command) or (ctx.interaction is not None and not context_menu)
+
+    stats = CommandStats(
+        command=command.qualified_name.lower(),
+        timestamp=timestamp,
+        user_id=ctx.author.id,
+        slash=slash,
+        context_menu=context_menu,
+    )
+
+    session.add(stats)
+    await session.commit()
diff --git a/database/crud/github.py b/database/crud/github.py
new file mode 100644
index 0000000..0d32377
--- /dev/null
+++ b/database/crud/github.py
@@ -0,0 +1,51 @@
+from typing import Optional
+
+import sqlalchemy.exc
+from sqlalchemy import delete, select
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from database.exceptions import (
+    DuplicateInsertException,
+    Forbidden,
+    NoResultFoundException,
+)
+from database.schemas import GitHubLink
+
+__all__ = ["add_github_link", "delete_github_link_by_id", "get_github_links"]
+
+
+async def add_github_link(session: AsyncSession, user_id: int, url: str) -> GitHubLink:
+    """Add a new GitHub link into the database"""
+    try:
+        gh_link = GitHubLink(user_id=user_id, url=url)
+        session.add(gh_link)
+        await session.commit()
+        await session.refresh(gh_link)
+    except sqlalchemy.exc.IntegrityError:
+        raise DuplicateInsertException
+
+    return gh_link
+
+
+async def delete_github_link_by_id(session: AsyncSession, user_id: int, link_id: int):
+    """Remove an existing link from the database
+
+    You can only remove links owned by you
+    """
+    select_statement = select(GitHubLink).where(GitHubLink.github_link_id == link_id)
+    gh_link: Optional[GitHubLink] = (await session.execute(select_statement)).scalar_one_or_none()
+    if gh_link is None:
+        raise NoResultFoundException
+
+    if gh_link.user_id != user_id:
+        raise Forbidden
+
+    delete_statement = delete(GitHubLink).where(GitHubLink.github_link_id == gh_link.github_link_id)
+    await session.execute(delete_statement)
+    await session.commit()
+
+
+async def get_github_links(session: AsyncSession, user_id: int) -> list[GitHubLink]:
+    """Get a user's GitHub links"""
+    statement = select(GitHubLink).where(GitHubLink.user_id == user_id)
+    return (await session.execute(statement)).scalars().all()
diff --git a/database/schemas.py b/database/schemas.py
index 8b952fd..f497b2d 100644
--- a/database/schemas.py
+++ b/database/schemas.py
@@ -27,11 +27,13 @@ __all__ = [
     "Bank",
     "Birthday",
     "Bookmark",
+    "CommandStats",
     "CustomCommand",
     "CustomCommandAlias",
     "DadJoke",
     "Deadline",
     "EasterEgg",
+    "GitHubLink",
     "Link",
     "MemeTemplate",
     "NightlyData",
@@ -95,6 +97,20 @@ class Bookmark(Base):
     user: User = relationship("User", back_populates="bookmarks", uselist=False, lazy="selectin")
 
 
+class CommandStats(Base):
+    """Metrics on how often commands are used"""
+
+    __tablename__ = "command_stats"
+    command_stats_id: int = Column(Integer, primary_key=True)
+    command: str = Column(Text, nullable=False)
+    timestamp: datetime = Column(DateTime(timezone=True), nullable=False)
+    user_id: int = Column(BigInteger, ForeignKey("users.user_id"))
+    slash: bool = Column(Boolean, nullable=False)
+    context_menu: bool = Column(Boolean, nullable=False)
+
+    user: User = relationship("User", back_populates="command_stats", uselist=False, lazy="selectin")
+
+
 class CustomCommand(Base):
     """Custom commands to fill the hole Dyno couldn't"""
 
@@ -157,6 +173,18 @@ class EasterEgg(Base):
     startswith: bool = Column(Boolean, nullable=False, server_default="1")
 
 
+class GitHubLink(Base):
+    """A user's GitHub link"""
+
+    __tablename__ = "github_links"
+
+    github_link_id: int = Column(Integer, primary_key=True)
+    url: str = Column(Text, nullable=False, unique=True)
+    user_id: int = Column(BigInteger, ForeignKey("users.user_id"))
+
+    user: User = relationship("User", back_populates="github_links", uselist=False, lazy="selectin")
+
+
 class Link(Base):
     """Useful links that go useful places"""
 
@@ -266,6 +294,12 @@ class User(Base):
     bookmarks: list[Bookmark] = relationship(
         "Bookmark", back_populates="user", uselist=True, lazy="selectin", cascade="all, delete-orphan"
     )
+    command_stats: list[CommandStats] = relationship(
+        "CommandStats", back_populates="user", uselist=True, lazy="selectin", cascade="all, delete-orphan"
+    )
+    github_links: list[GitHubLink] = relationship(
+        "GitHubLink", back_populates="user", uselist=True, lazy="selectin", cascade="all, delete-orphan"
+    )
     nightly_data: NightlyData = relationship(
         "NightlyData", back_populates="user", uselist=False, lazy="selectin", cascade="all, delete-orphan"
     )
diff --git a/didier/cogs/discord.py b/didier/cogs/discord.py
index c13c782..70b4414 100644
--- a/didier/cogs/discord.py
+++ b/didier/cogs/discord.py
@@ -4,7 +4,7 @@ import discord
 from discord import app_commands
 from discord.ext import commands
 
-from database.crud import birthdays, bookmarks
+from database.crud import birthdays, bookmarks, github
 from database.exceptions import (
     DuplicateInsertException,
     Forbidden,
@@ -15,6 +15,7 @@ from didier import Didier
 from didier.exceptions import expect
 from didier.menus.bookmarks import BookmarkSource
 from didier.menus.common import Menu
+from didier.utils.discord import colours
 from didier.utils.discord.assets import get_author_avatar
 from didier.utils.types.datetime import str_to_date
 from didier.utils.types.string import leading
@@ -193,6 +194,84 @@ class Discord(commands.Cog):
         modal = CreateBookmark(self.client, message.jump_url)
         await interaction.response.send_modal(modal)
 
+    @commands.group(name="github", aliases=["gh", "git"], case_insensitive=True, invoke_without_command=True)
+    async def github_group(self, ctx: commands.Context, user: Optional[discord.User] = None):
+        """Show a user's GitHub links.
+
+        If no user is provided, this shows your links instead.
+        """
+        # Default to author
+        user = user or ctx.author
+
+        embed = discord.Embed(colour=colours.github_white(), title="GitHub Links")
+        embed.set_author(
+            name=user.display_name, icon_url=user.avatar.url if user.avatar is not None else user.default_avatar.url
+        )
+
+        embed.set_footer(text="Links can be added using didier github add <link>.")
+
+        async with self.client.postgres_session as session:
+            links = await github.get_github_links(session, user.id)
+
+        if not links:
+            embed.description = "This user has not set any GitHub links yet."
+        else:
+            regular_links = []
+            ugent_links = []
+
+            for link in links:
+                if "github.ugent.be" in link.url.lower():
+                    ugent_links.append(f"`#{link.github_link_id}`: {link.url}")
+                else:
+                    regular_links.append(f"`#{link.github_link_id}`: {link.url}")
+
+            regular_links.sort()
+            ugent_links.sort()
+
+            if ugent_links:
+                embed.add_field(name="Ghent University", value="\n".join(ugent_links), inline=False)
+
+            if regular_links:
+                embed.add_field(name="Other", value="\n".join(regular_links), inline=False)
+
+        return await ctx.reply(embed=embed, mention_author=False)
+
+    @github_group.command(name="add", aliases=["create", "insert"])
+    async def github_add(self, ctx: commands.Context, link: str):
+        """Add a new link into the database."""
+        # Remove wrapping <brackets> which can be used to escape Discord embeds
+        link = link.removeprefix("<").removesuffix(">")
+
+        async with self.client.postgres_session as session:
+            try:
+                gh_link = await github.add_github_link(session, ctx.author.id, link)
+            except DuplicateInsertException:
+                return await ctx.reply("This link has already been registered by someone.", mention_author=False)
+
+        await self.client.confirm_message(ctx.message)
+        return await ctx.reply(f"Successfully inserted link `#{gh_link.github_link_id}`.", mention_author=False)
+
+    @github_group.command(name="delete", aliases=["del", "remove", "rm"])
+    async def github_delete(self, ctx: commands.Context, link_id: str):
+        """Delete the link with it `link_id` from the database.
+
+        You can only delete your own links.
+        """
+        try:
+            link_id_int = int(link_id.removeprefix("#"))
+        except ValueError:
+            return await ctx.reply(f"`{link_id}` is not a valid link id.", mention_author=False)
+
+        async with self.client.postgres_session as session:
+            try:
+                await github.delete_github_link_by_id(session, ctx.author.id, link_id_int)
+            except NoResultFoundException:
+                return await ctx.reply(f"Found no GitHub link with id `#{link_id_int}`.", mention_author=False)
+            except Forbidden:
+                return await ctx.reply(f"You don't own GitHub link `#{link_id_int}`.", mention_author=False)
+
+        return await ctx.reply(f"Successfully deleted GitHub link `#{link_id_int}`.", mention_author=False)
+
     @commands.command(name="join")
     async def join(self, ctx: commands.Context, thread: discord.Thread):
         """Make Didier join `thread`.
diff --git a/didier/cogs/help.py b/didier/cogs/help.py
index c6d88d6..459f802 100644
--- a/didier/cogs/help.py
+++ b/didier/cogs/help.py
@@ -188,7 +188,7 @@ class CustomHelpCommand(commands.MinimalHelpCommand):
         embed.add_field(name="Signature", value=signature, inline=False)
 
         if command.aliases:
-            embed.add_field(name="Aliases", value=", ".join(command.aliases), inline=False)
+            embed.add_field(name="Aliases", value=", ".join(sorted(command.aliases)), inline=False)
 
     def _get_cog(self, cogs: list[commands.Cog], name: str) -> Optional[commands.Cog]:
         """Try to find a cog, case-insensitively"""
diff --git a/didier/data/embeds/error_embed.py b/didier/data/embeds/error_embed.py
index 9118c6d..03edd25 100644
--- a/didier/data/embeds/error_embed.py
+++ b/didier/data/embeds/error_embed.py
@@ -23,12 +23,14 @@ def _get_traceback(exception: Exception) -> str:
         if line.strip():
             error_string += "\n"
 
-    return abbreviate(error_string, Limits.EMBED_FIELD_VALUE_LENGTH)
+    return abbreviate(error_string, Limits.EMBED_FIELD_VALUE_LENGTH - 8)
 
 
 def create_error_embed(ctx: commands.Context, exception: Exception) -> discord.Embed:
     """Create an embed for the traceback of an exception"""
-    description = _get_traceback(exception)
+    # Wrap the traceback in a codeblock for readability
+    description = _get_traceback(exception).strip()
+    description = f"```\n{description}\n```"
 
     if ctx.guild is None:
         origin = "DM"
@@ -40,7 +42,7 @@ def create_error_embed(ctx: commands.Context, exception: Exception) -> discord.E
     embed = discord.Embed(title="Error", colour=discord.Colour.red())
     embed.add_field(name="Command", value=f"{ctx.message.content}", inline=True)
     embed.add_field(name="Context", value=invocation, inline=True)
-    embed.add_field(name="Exception", value=abbreviate(str(exception), Limits.EMBED_FIELD_VALUE_LENGTH), inline=False)
+    embed.add_field(name="Exception", value=str(exception), inline=False)
     embed.add_field(name="Traceback", value=description, inline=False)
 
     return embed
diff --git a/didier/didier.py b/didier/didier.py
index a72196e..9bec3f6 100644
--- a/didier/didier.py
+++ b/didier/didier.py
@@ -1,7 +1,9 @@
 import logging
 import os
 import pathlib
+import re
 from functools import cached_property
+from typing import Union
 
 import discord
 from aiohttp import ClientSession
@@ -10,7 +12,7 @@ from discord.ext import commands
 from sqlalchemy.ext.asyncio import AsyncSession
 
 import settings
-from database.crud import custom_commands
+from database.crud import command_stats, custom_commands
 from database.engine import DBSession
 from database.utils.caches import CacheManager
 from didier.data.embeds.error_embed import create_error_embed
@@ -18,6 +20,7 @@ from didier.data.embeds.schedules import Schedule, parse_schedule
 from didier.exceptions import HTTPException, NoMatch
 from didier.utils.discord.prefix import get_prefix
 from didier.utils.easter_eggs import detect_easter_egg
+from didier.utils.types.datetime import tz_aware_now
 
 __all__ = ["Didier"]
 
@@ -194,30 +197,6 @@ class Didier(commands.Bot):
         """Log a warning message"""
         await self._log(logging.WARNING, message, log_to_discord)
 
-    async def on_ready(self):
-        """Event triggered when the bot is ready"""
-        print(settings.DISCORD_READY_MESSAGE)
-
-    async def on_message(self, message: discord.Message, /) -> None:
-        """Event triggered when a message is sent"""
-        # Ignore messages by bots
-        if message.author.bot:
-            return
-
-        # Boos react to people that say Dider
-        if "dider" in message.content.lower() and message.author.id != self.user.id:
-            await message.add_reaction(settings.DISCORD_BOOS_REACT)
-
-        # Potential custom command
-        if await self._try_invoke_custom_command(message):
-            return
-
-        await self.process_commands(message)
-
-        easter_egg = await detect_easter_egg(self, message, self.database_caches.easter_eggs)
-        if easter_egg is not None:
-            await message.reply(easter_egg, mention_author=False)
-
     async def _try_invoke_custom_command(self, message: discord.Message) -> bool:
         """Check if the message tries to invoke a custom command
 
@@ -241,9 +220,16 @@ class Didier(commands.Bot):
         # Nothing found
         return False
 
-    async def on_thread_create(self, thread: discord.Thread):
-        """Event triggered when a new thread is created"""
-        await thread.join()
+    async def on_app_command_completion(
+        self,
+        interaction: discord.Interaction,
+        command: Union[discord.app_commands.Command, discord.app_commands.ContextMenu],
+    ):
+        """Event triggered when an app command completes successfully"""
+        ctx = await commands.Context.from_interaction(interaction)
+
+        async with self.postgres_session as session:
+            await command_stats.register_command_invocation(session, ctx, command, tz_aware_now())
 
     async def on_app_command_error(self, interaction: discord.Interaction, exception: AppCommandError):
         """Event triggered when an application command errors"""
@@ -257,8 +243,18 @@ class Didier(commands.Bot):
             else:
                 return await interaction.followup.send(str(exception.original), ephemeral=True)
 
+    async def on_command_completion(self, ctx: commands.Context):
+        """Event triggered when a message command completes successfully"""
+        # Hybrid command invocation triggers both this handler and on_app_command_completion
+        # We handle it in the correct place
+        if ctx.interaction is not None:
+            return
+
+        async with self.postgres_session as session:
+            await command_stats.register_command_invocation(session, ctx, ctx.command, tz_aware_now())
+
     async def on_command_error(self, ctx: commands.Context, exception: commands.CommandError, /):
-        """Event triggered when a regular command errors"""
+        """Event triggered when a message command errors"""
         # If working locally, print everything to your console
         if settings.SANDBOX:
             await super().on_command_error(ctx, exception)
@@ -289,24 +285,61 @@ class Didier(commands.Bot):
         ):
             return await ctx.reply(str(exception.original), mention_author=False)
 
-        # Print everything that we care about to the logs/stderr
-        await super().on_command_error(ctx, exception)
-
         if isinstance(exception, commands.MessageNotFound):
             return await ctx.reply("This message could not be found.", ephemeral=True, delete_after=10)
 
+        if isinstance(exception, (commands.MissingRequiredArgument,)):
+            message = str(exception)
+
+            match = re.search(r"(.*) is a required argument that is missing\.", message)
+            if match is not None and match.groups():
+                message = f"Found no value for the `{match.groups()[0]}`-argument."
+
+            return await ctx.reply(message, ephemeral=True, delete_after=10)
+
         if isinstance(
             exception,
             (
                 commands.BadArgument,
-                commands.MissingRequiredArgument,
                 commands.UnexpectedQuoteError,
                 commands.ExpectedClosingQuoteError,
             ),
         ):
             return await ctx.reply("Invalid arguments.", ephemeral=True, delete_after=10)
 
+        # Print everything that we care about to the logs/stderr
+        await super().on_command_error(ctx, exception)
+
         if settings.ERRORS_CHANNEL is not None:
             embed = create_error_embed(ctx, exception)
             channel = self.get_channel(settings.ERRORS_CHANNEL)
             await channel.send(embed=embed)
+
+    async def on_message(self, message: discord.Message, /) -> None:
+        """Event triggered when a message is sent"""
+        # Ignore messages by bots
+        if message.author.bot:
+            return
+
+        # Boos react to people that say Dider
+        if "dider" in message.content.lower() and message.author.id != self.user.id:
+            await message.add_reaction(settings.DISCORD_BOOS_REACT)
+
+        # Potential custom command
+        if await self._try_invoke_custom_command(message):
+            return
+
+        await self.process_commands(message)
+
+        easter_egg = await detect_easter_egg(self, message, self.database_caches.easter_eggs)
+        if easter_egg is not None:
+            await message.reply(easter_egg, mention_author=False)
+
+    async def on_ready(self):
+        """Event triggered when the bot is ready"""
+        print(settings.DISCORD_READY_MESSAGE)
+
+    async def on_thread_create(self, thread: discord.Thread):
+        """Event triggered when a new thread is created"""
+        # Join threads automatically
+        await thread.join()
diff --git a/didier/utils/discord/colours.py b/didier/utils/discord/colours.py
index c8a55e6..e0ebb5c 100644
--- a/didier/utils/discord/colours.py
+++ b/didier/utils/discord/colours.py
@@ -1,12 +1,23 @@
 import discord
 
-__all__ = ["error_red", "ghent_university_blue", "ghent_university_yellow", "google_blue", "urban_dictionary_green"]
+__all__ = [
+    "error_red",
+    "github_white",
+    "ghent_university_blue",
+    "ghent_university_yellow",
+    "google_blue",
+    "urban_dictionary_green",
+]
 
 
 def error_red() -> discord.Colour:
     return discord.Colour.red()
 
 
+def github_white() -> discord.Colour:
+    return discord.Colour.from_rgb(250, 250, 250)
+
+
 def ghent_university_blue() -> discord.Colour:
     return discord.Colour.from_rgb(30, 100, 200)