When I talk about Flickr in my presentations, I always show the Librarian Trading Cards pool, in part because I think it's a great way for librarians to market a new image. In fact, I've encouraged some folks to try these out as business cards, something I might do for the ALA Conference next week.

The folks at the Gould Library at Carleton College sure get the concept...check out their Trading Card Gallery - I love it!