Previous discussions: http://news.ycombinator.com/item?id=1282229 http://news.ycombinator.com/item?id=1282229 http://news.ycombinator.com/item?id=1274655 http

Previous discussions: http://news.ycombinator.com/item?id=1282229 http://news.ycombinator.com/item?id=1282229 http://news.ycombinator.com/item?id=1274655 http://news.ycombinator.com/item?id=1274655