This feels like it gets asked quite often: http://news.ycombinator.com/item?id=1734122 http://news.ycombinator.com/item?id=1734122 http://news.ycombinator.com

This feels like it gets asked quite often: http://news.ycombinator.com/item?id=1734122 http://news.ycombinator.com/item?id=1734122 http://news.ycombinator.com/item?id=2891596 http://news.ycombinator.com/item?id=2891596 http://news.ycombinator.com/item?id=2848674 http://news.ycombinator.com/item?id=2848674 http://news.ycombinator.com/item?id=1525445 http://news.ycombinator.com/item?id=1525445 <-- has links to others threads on the same topic It was a quick search and I am sure there are more that I missed.