iBooks can't have links to Amazon books - Duh

Apple rejects iBook with links to Amazon’s store: Before anyone starts yelling about censorship, keep in mind that this is Apple’s playground, and it can take its ball home whenever it wants, no matter how inane the reason. But this reason seems particularly inane — Apple can’t really be worried about one link in a ebook promoting a competitor’s sales, right? Not to mention that the book in question was a hardcover copy, and unless I’m mistaken, wasn’t even sold on Apple’s iBooks store…