I Love Books
Now this is something I can totally get on board with … Books on Board has an incredible selection of nearly 200,000 ebooks from major publishers and small presses at hard to believe prices. No matter what your preferred format - Adobe pdf, Microsoft Reader, Mobipocket, or Palm/ereader, BoB has it.
Their genre list is quite impressive as well. You can find some of the best Horror, Mystery, Thriller and Romance Authors represented here. They also have a great selection of non fiction titles, too, including Self Help, Business, Sports, Spiritual and Textbooks.
Oh, and you get these great prices with no membership fees. Sweet.