No, not that Gravitar (notice the spelling) – this gravatar – a modestly clever idea for making a universally available graphic (an avatar) for web forums, weblogs, and the attendant comment systems. Register yourself, and any system that supports this will begin to show your avatar when you use it. This is much simpler than the normal process of registering your avatar at every site you register for, and their rating system makes sure your r-rated avatar doesn’t show itself in all its glory at, say, disney.com. This is already supported by a lot of the big publishing tools (blogger, movabletype, wordpress, livejournal), and there are implementations out for drupal and phpbb, presumably the other big message board toolsets will have implementations shortly.