Previous submission from 3.5 years ago: http://news.ycombinator.com/item?id=304736 http://news.ycombinator.com/item?id=304736 (I thought it was worth submitting

Previous submission from 3.5 years ago: http://news.ycombinator.com/item?id=304736 http://news.ycombinator.com/item?id=304736 (I thought it was worth submitting again.)