Here's the post this one is follow-up to, which has a little more background: http://news.ycombinator.com/item?id=1486017 http://news.ycombinator.com/item?id=1

Here's the post this one is follow-up to, which has a little more background: http://news.ycombinator.com/item?id=1486017 http://news.ycombinator.com/item?id=1486017