Also, linked from that first article is this second, even longer one.

http://www4.ncsu.edu/~tenshi/Killer_000.htm

This one is much more sober and just questions the moral message of Ender's Game. Did anyone here manage to read both the book and that article? Having read it, I'm even less interested in reading Ender's Game than I was before, but I wonder how well-deserved its criticisms are.