The Kosmix health search engine has been around for about a year, and I’d be interested to hear your opinions of it. You enter your search term and get back clustered results in a very organized, structured way.
For any topic, there are categories for Basic Information (including definitions, symptoms, prevention, etc.); information for Medical Professionals; Natural Medicine; Support Groups; and Patient Type (Men, Women and Children.) I especially like the way that there are links to the most popular prescription drugs for each condition right at the top of the page, since this is the kind of information users are often interested in finding.
In addition to its own search engine, Kosmix has been making deals to power the search for some other health sites with their structured clustering technology.
They also have similar, structured search engines for Finance, Travel Video Games, US Politics and Automobiles.
The site is still labeled Beta, but then again, what isn’t Beta these days? Definitely worth a look.