I must direct you over to Chery's Book Nook, she is having an AWESOME Contest that ends in March for 5 books in one Giveaway!! Find this Contest Giveaway HERE.
Also check out Book Blogs. There are Forums and Groups to join which get a little confusing but there are GiveAways there.
A couple examples that are currently going: Worducopia for "Rich Like Them"
Wendi Barker's Blog at the Book Corner
Carey's Blog for Among The Mad
As I come across more I'll post them :)