Rated 5 out of 5 stars

I loved the bookburro. Was a little bit clunky, but definitely cool. I'm very impressed with what Jeese has done. But no longer supported. The heir apparent to BB, which just came out is BargainBookMole created by experienced developer Baris Derin [his add-ons have been downloaded million+ times]. Bargain Book Mole works seemlessly to find the lowest prices on the fly--a little tab descends only appears when you're looking at details for a book. Then searches 30-plus biggest bookselling websites [tens of thousands of individual booksellers]. Plus, they give 5% of any affiliate fees they make to nonprofit causes.

This review is for a previous version of the add-on (0.74).