I know a few people who are absolutely adamant that Facebook will, in time move into banking, and it wouldn't really surprise me if they did. 

Could Facebook also become our Estate Agent of choice too?  Very probably if this article is to be taken on board.

This is a good read, not only because it gives a great example of how one person sold their house through Facebook, but also opens the mind to other potential ways Facebook will become (is becoming) an essential utility in our lives.