Has anyone had any experience buying ebooks from them? It looks like for the Kindle you have to buy multiformat but alot of the books are secure versions. They do have rebates on books also but again looks like mostly for secure versions. Any one that has any thoughts I would appreciate it as I am new to all this as I ordered my Kindle 2 and am very excited as I read about 1 book every 2 days. Also new to this board so hello to everyone out there! Thanks in advance!