Google did this recently (HN discussion here: http://news.ycombinator.com/item?id=3469692 http://news.ycombinator.com/item?id=3469692) but since ended the "expe

Google did this recently (HN discussion here: http://news.ycombinator.com/item?id=3469692 http://news.ycombinator.com/item?id=3469692) but since ended the "experiment".