Hmm. you should probably look at http://adaptivesemantics.com/ http://adaptivesemantics.com/ . I just heard their founder present at SXSW, who was introduced as

Hmm. you should probably look at http://adaptivesemantics.com/ http://adaptivesemantics.com/ . I just heard their founder present at SXSW, who was introduced as a "machine learning guru". they do machine learning for sentiment analysis