I noted today that facebook profiles are now out in the wild and started pondering the impacts of this from an SERPS perspective. While it may not initialy seem like such a big deal it only about 20m or so which in the scale of things is not that massive.

However, I think its pretty obvious that facebook is an authority site so these pages will get a significant boost, the SEO world has been in full swing on facebook for some time and you can buy a facebook friend network of 5000 for a couple hundred dollars.