ZDnet has a good article about Big Blue's Web Fountain. Using hubs and authorities (what Teoma uses) IBM plans to create a different type of search product.

The Web Fountain project will be used to track answers to questions such as "what do people think about me?" Its goal is to help people project trends and find answers that would otherwise make no sense to other search engines.

Web Fountain also has an interesting model. Instead of people buying hardware, IBM wants people to lease processor power. Now that is an efficient way to run a business!