Hakia is a semantic search engine, a technology that lets users search the Web using everyday word combinations. Also, instead of simply trying to provide popular results, it'll pull in the ones more relevant to the query you're asking--something that's difficult to get right but incredibly important to the future of search engine technology.
Besides its core search, Hakia has a social aspect with a feature called "Meet Others." It will give you the option, from a search results page, to jump to a page on the service where everyone who searches for the topic can communicate. In practice it could connect you with other people looking for info about the what you're looking for, making an ad-hoc support group.
Winner: Hakia (Hakia.com)