Previous discussions: http://news.ycombinator.com/item?id=1218951 http://news.ycombinator.com/item?id=1218951, http://news.ycombinator.com/item?id=3792627 http:

Previous discussions: http://news.ycombinator.com/item?id=1218951 http://news.ycombinator.com/item?id=1218951, http://news.ycombinator.com/item?id=3792627 http://news.ycombinator.com/item?id=3792627, https://news.ycombinator.com/item?id=9855784 https://news.ycombinator.com/item?id=9855784