NoScript shows buzzfeed.com when you initially load it, when you (temporarily) accept that domain you get lots of others... including facebook.net. Allowing any one of those (which I didn't do) may bring up others in this very fun game of javascript domain whackamole. Using that extension or one of many others that work similarly will enlighten even the most technophobic of journalists as to how this all works.

I find it hard to believe they looked into the subject and didn't run across these. But I suppose it's possible.