Previous discussion (before the reinstatement of the operation): http://news.ycombinator.com/item?id=3184517 http://news.ycombinator.com/item?id=3184517 Most o

Previous discussion (before the reinstatement of the operation): http://news.ycombinator.com/item?id=3184517 http://news.ycombinator.com/item?id=3184517 Most of the pro/con arguments are in there.