A new version of the MyBlogLogAvatar WordPress plugin has been released which puts it at version 0.42. This new version includes

Added an option to use Wavatars, MonsterIDs and Identicons through Gravatar as described here
Fixed Some issues with deleting anonymous avatars.

Although Gravatar support can be added to WordPress themes by means of adding the gravatar function, [...]

Looks like Gravatars have now made it into the official WordPress support forums. 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. If you already have an active account with Gravatar, and [...]