See the request from the Free Software Foundation:
http://www.fsf.org/news/uspto-bilski-guidance
Here are comments from a recent thread on HN:
http://news.ycombinator.com/item?id=1723904
http://www.fsf.org/news/uspto-bilski-guidance
Here are comments from a recent thread on HN:
http://news.ycombinator.com/item?id=1723904