I just googled "facebook login" and the results were:

1. www.facebook.com/login.php

2. http://www.facebook.com/topic.php?uid=6147172660&topic=4...

3. apps.facebook.com/onthefarm (apparently many people go straight there and are hit with the login, this is the url for Farmville)

4. www.mahalo.com/facebook-login

So this link is the first non-facebook link. I bet they get some good page views from it.