Q: How do I put an avatar-link to another user into my comment/submission?
You can link to another user by writing the following:
This will display a clickable avatar for the user "USERNAME" along with the name. Hovering over the username will open a nifty menu with direct links to that user's gallery and stories.
If you want JUST the avatar picture without the username or popup menu, use this:
So for example, to link to Toumal, you would write :iconToumal: