This Wednesday AOL Founder Steve Case spoke at D5 about his new venture, Revolution Health. Revolution Health is setting out to be far more than just a health information source on the web, but it is already succeeding on that front. For the week ending May 26, 2007, Revolution Health was ranked #11 in the Health & Medical – Information category, and traffic increased by 113% since the week ending April 28, 2007, when it was ranked #23.

Like most health information sites, Revolution Health’s primary source of traffic is search engines. Last week it received 49% of upstream visits from search engines, on par with the Health Information category average of 53.5%. While Google is the dominant search engine for Revolution Health, it received 16% of its search traffic from Ask for the four weeks ending May 26, 2007. The category as a whole received 8.8% of search visits from Ask in that period. It turns out that Ask is a good partner for health websites, since 2.69% of the visits leaving Ask went to Health Information sites for the week ending May 26, 2007, compared to 1.39% of visits leaving Google.