I'll have to put this on my 'to read' list, it looks really interesting. I think natural language processing/understanding may become one of those next 'big things' like mobile and social media simply because understanding what a user is trying to do will become very important.

If anyone is interested in playing around with a robust natural language processing tool, I built an API for the Stanford Parser. http://nlp.naturalparsing.com/browserparser/parse