HealthCentral just announced $50 million in funding. The round included a major investment from IAC and smaller contributions from prior investors Sequoia Capital, Carlyle Group and Polaris Venture Partners. HealthCentral operates several health-related websites, including the long-troubled DrKoop.com, which was once a publicly traded company a bubble or two ago. Here's how their traffic looked last year, according to Compete. It's nice and all, but stick around for the one comparing HealthCentral to WebMD. If I used the word pwnage, I would. But I don't.