You can find previous discussions about it here : http://news.ycombinator.com/item?id=5053370 http://news.ycombinator.com/item?id=5053370 http://news.ycombinato

You can find previous discussions about it here : http://news.ycombinator.com/item?id=5053370 http://news.ycombinator.com/item?id=5053370 http://news.ycombinator.com/item?id=5082923 http://news.ycombinator.com/item?id=5082923