Sporcle is making a few improvements.
We just rolled out the notion of Sporcle Handles. Nicknames will be going away and Sporcle users will be required to choose a unique handle that will be used for your user profile page, as well as for comments.
If you want to see an example of one, check it out:
If you haven’t already, please go to your profile page (http://www.sporcle.com/profile.php) to select a handle.