This kind of falls in line with my confusion as to why people ruin their websites with all these components and hooks into Facebook. They claim that they need Facebook Likes and Logins and Discussions in their websites, because Facebook drives traffic. Even if they hate it, they have to succumb to it. You know, for generating traffic. My question remains - why do you want to try appealing to a group of people to whom Facebook is "the internet" and who do everything through Facebook? Those people aren't going to make a point of going to your website again, unless someone links them to it a second time down the road. It seems like a lot of resources (not to mention website screen real-estate) given up for very little desirable return.