Actually, there is a problem. Awesome. I'm working on a fix. Long story short, there is a rogue js file. If you visit Ohio Riders via Google (or any other search engine it looks like), when you click the link from Google it redirects you to porn or other spam. But it only does it once, then waits like 10k seconds to do it again. That's what has made it seem like it wasn't coming from Ohio Riders. I've submitted a ticket with IPB. There was a similar vulnerability in IPB and vBulletin a while back. This looks like a new version of that.