I asked this question a while back on HN and there were some good responses: https://news.ycombinator.com/item?id=1731699 https://news.ycombinator.com/item?id=1

I asked this question a while back on HN and there were some good responses: https://news.ycombinator.com/item?id=1731699 https://news.ycombinator.com/item?id=1731699