dup: http://news.ycombinator.com/item?id=1136984 http://news.ycombinator.com/item?id=1136984 also appeared in http://news.ycombinator.com/item?id=1134342 http:

dup: http://news.ycombinator.com/item?id=1136984 http://news.ycombinator.com/item?id=1136984 also appeared in http://news.ycombinator.com/item?id=1134342 http://news.ycombinator.com/item?id=1134342