Repeat of http://news.ycombinator.com/item?id=6576482 http://news.ycombinator.com/item?id=6576482 from 4 weeks ago, with informative discussion. Few upvotes, fo

Repeat of http://news.ycombinator.com/item?id=6576482 http://news.ycombinator.com/item?id=6576482 from 4 weeks ago, with informative discussion. Few upvotes, for apparently good reason.