See this thread with the same question for reference: http://news.ycombinator.com/item?id=1447438 http://news.ycombinator.com/item?id=1447438 also this one: ht

See this thread with the same question for reference: http://news.ycombinator.com/item?id=1447438 http://news.ycombinator.com/item?id=1447438 also this one: http://news.ycombinator.com/item?id=1238906 http://news.ycombinator.com/item?id=1238906 with a comment by pg there