Gravatar
This has nothing to do with Reptar, it is a global avatar for use in comments and discussion groups. Haloscan recently added gravatars to its comments, which is why that little box has been showing up in the upper right.
If you want to have your own, you need to create an 80 by 80 graphic and go to gravatar.com to register it. The key to using a gravatar is your e-mail address, so if you don’t use an e-mail address in comments, save your time and energy.
Update: The gravatar feature is apparently part of a beta test, like preview, so it will show up and then disappear.
