I received a link to this website today from a library list-serve I am on. It looks like pretty much the same info you can get on Amazon or Barnes&Noble. The premium (pay-for) service looks interesting, but I am too cheap. Anyway, looks like a good source for booklists, bookcovers, reviews, etc. Nice way to find series book order, etc.

http://www.fictiondb.com/default.asp?genre=G