How should Facebook make income in the near future

The thing Facebook have not figured out yet is how to use their fantastic product to generate the a lot of money, consistently as well as on an ongoing basis ??? i.e. finding the right business model. A truly fascinating topic to produce my first blog about, since, in my view, identifying the most effective business model for Facebook can not be accomplished using traditional thinking, like, only thinking about Google and search engine ad earnings, by way of example.