[This post was about version 0.9, but I’ve sorted out a major bug, and added Gravatars, and because my daft consecutive version numbering system was up to it, I’ve had to release Version One twenty minutes after 0.9; I didn’t see the point of writing a whole new post.]
I’ve added support for the hCard microformat; if you want this to be a fun thing, I recommend getting the Operator addon for Firefox (you’re already using Firefox, aren’t you? You should be, it’s not pants (to quote S. Fry)).
If an addressbook contact has a gravatar, it will now be displayed in both address lists.
As always, get this version from the WordPress site, and give me any feedback in the comments to this post. Thanks!