I've been looking at the new design for the BBC News website and noticed, at the bottom of one of the pages, a hint that users will be able to integrate the site with their Facebook account.
At the bottom of the screen shot below, you'll see the text "John Day and 2 of your friends recommend this". It's a nice idea because it will make reading the news, something usually done in isolation, feel more like a shared experience. It will also make articles feel more personally relevant. (Clicking the image below will open the full size in a pop-up.)