For a different perspective on Orson Scott Card, read http://www4.ncsu.edu/~tenshi/Killer_000.htm. I haven't actually read the book, but it seems to me that article raises a number of issues seem pretty important to think about.

There's also the far kookier http://www.kuro5hin.org/story/2005/5/28/22428/7034, with its ensuing flamewars in the comments, which is sort of hilarious in its own right.