I asked this same question a few weeks ago on HN. Some interesting points were brought up. http://news.ycombinator.com/item?id=4310710 http://news.ycombinator.c

I asked this same question a few weeks ago on HN. Some interesting points were brought up. http://news.ycombinator.com/item?id=4310710 http://news.ycombinator.com/item?id=4310710