Dup: http://news.ycombinator.com/item?id=1872289 http://news.ycombinator.com/item?id=1872289 Also: http://news.ycombinator.com/item?id=1872306 http://news.ycom

Dup: http://news.ycombinator.com/item?id=1872289 http://news.ycombinator.com/item?id=1872289 Also: http://news.ycombinator.com/item?id=1872306 http://news.ycombinator.com/item?id=1872306