Previous discussions: http://news.ycombinator.com/item?id=2651745 http://news.ycombinator.com/item?id=2651745, http://news.ycombinator.com/item?id=2847177 http:

Previous discussions: http://news.ycombinator.com/item?id=2651745 http://news.ycombinator.com/item?id=2651745, http://news.ycombinator.com/item?id=2847177 http://news.ycombinator.com/item?id=2847177