Why I link my books to Bookview Cafe:
BVC (which offers its e-books in mobi and epub formats) was formed by a bunch of writers as a cooperative publishing effort. Books offered cross all genres, from science fiction to romance to historical to mainstream. We function as editors, copyeditors, formatters, cover artists, and site maintainers for one another. 90% of the proceeds go to the authors! That means that the author actually earns most of the money you pay, instead of publishers and big venues like Amazon, B&N, and iTunes.