works Rated 4 out of 5 stars

Does not always work, then shows only gravatars, but not the photos from address book.
Posted a list of my addons here
Any restrictions for picture format, size etc.?
[EDIT] Does not choose the right (main) address book, if same addresses are in more than one address book.

This review is for a previous version of the add-on (0.1.2).