Summize, a service that allows users to search & discover the topics and attitudes expressed within online conversations, specifically Twitter, just launched a new product from their labs. The new product measures the overall sentiment about a keyword or phrase.
So far, I'm not quite sold on it's legitimacy, and I'd love to hear how they gather this information, but for now, it's a fun new toy. To test the waters I put in some queries (George Bush, Global Warming, and Bikini) that I thought would deliver interesting results. You should try your own search. I'm not convinced it works, but I think it's going somewhere for sure.