We first told you about Steve Case's latest business venture, Revolution Health, in April. On December 5, the company announced its acquisition of HealthTalk and its investment in SparkPeople. Thanks to the latest additions, Revolution Health Network now has more than 12 million unique users and more than 200 million page views per month. "With HealthTalk and SparkPeople, Revolution Health Network is now the second largest health property on the internet, generating more page views than MayoClinic, Everyday Health, Yahoo! Health, iVillage Total Health and RealAge combined, putting us within striking distance of being number one," said Steve Case, chairman and CEO of Revolution Health Group.

For more information about how Revolution Health came to be, check out this interview with Steve Case.