dasBlog does finally support Gravatars. One step more away from the anonym beginnings of the web. Check the comments of this blog entry to view how they work. Definitely another Web 2.0 application. Gravatars can be easy added to any weblog:

A gravatar, or globally recognized avatar, is quite simply an 80×80 pixel avatar image that follows you from weblog to weblog appearing beside your name when you comment on gravatar enabled sites. Avatars help identify your posts on web forums, so why not on weblogs?