First discussed here, almost 3 years ago. http://news.ycombinator.com/item?id=1504126 http://news.ycombinator.com/item?id=1504126 Revisited here, 40 days ago,

First discussed here, almost 3 years ago. http://news.ycombinator.com/item?id=1504126 http://news.ycombinator.com/item?id=1504126 Revisited here, 40 days ago, http://news.ycombinator.com/item?id=4818584 http://news.ycombinator.com/item?id=4818584