I asked a very similar question a while back, hopefully some of the responses can help you get started: http://news.ycombinator.com/item?id=4286902 http://news

I asked a very similar question a while back, hopefully some of the responses can help you get started: http://news.ycombinator.com/item?id=4286902 http://news.ycombinator.com/item?id=4286902