Yup. Ghostery'll stop that. I think. It's really staggering how much you're being tracked.
For instance, right, now on this page, Facebook Connect is trying to log my activity, and this add-on is stopping it. Unless Jofnn has sold out to Facebook, I don't think there's any direct connection to it from GW, and yet here they are, tracking every single GW member. Most other sites there are around 5-10 websites trying to track me that get blocked. God knows what they've got on file from before I knew about it.