See:<p><a href="http://news.ycombinator.com/item?id=1947768" rel="nofollow">http://news.ycombinator.com/item?id=1947768</a> (nyt link and discussion)
<a href="http://news.ycombinator.com/item?id=1947813" rel="nofollow">http://news.ycombinator.com/item?id=1947813</a> (guardian)