Displays a box next to the comments form with an automatically updating gravatar, or a sign up link if no gravatar is found for the user.
Gravatars are great. But many people don't have them. Wouldn't it be nice if, when a user was filling in the comments form, the page could automatically detect and show a users gravatar, if they have one? Or even better, show a sign up link if they don't have one?
Well, here you go.