Tumblr is a good example of a website that has solved this problem. In the Dashboard, they have a footer a lot like the footer #2 in the Facebook example. It al

Tumblr is a good example of a website that has solved this problem. In the Dashboard, they have a footer a lot like the footer #2 in the Facebook example. It also makes use of the jump to top jquery plugin that makes using infinite scroll a breeze.