Why? Because once it hits 0 in a few months, it can't go any lower.
Links:
[1] http://www.zerohedge.com/users/tyler-durden
[2] http://www.zerohedge.com/taxonomy_vtn/term/11275
[3] http://www.zerohedge.com/sites/default/files/images/user5/imageroot/2013/01/Spanish%20mtges.jpg
[4] http://rss-feeds.zerohedge.com/comments/468907/rss.xml
[5] http://twitter.com/share