You might be interested in reading the comments from previous times this story has been submitted:

http://news.ycombinator.com/item?id=1408813 : 88 comments

http://news.ycombinator.com/item?id=1439742

http://news.ycombinator.com/item?id=2233443

http://news.ycombinator.com/item?id=2305491 : 42 comments

http://news.ycombinator.com/item?id=2807824