This has already been posted: <a href="http://news.ycombinator.com/item?id=1052565" rel="nofollow">http://news.ycombinator.com/item?id=1052565</a> <a href="http://news.ycombinator.com/item?id=1051392" rel="nofollow">http://news.ycombinator.com/item?id=1051392</a>