First of all, if you haven't read this post yet do so now. Great insight into the future of monetizing Facebook and the Facebook developers and marketers dilemma.

To be honest I had never thought that deeply about Facebook News Feed Optimization, I actually didn't even know that Facebook has their own algorithms, just like Google, which determines what feeds are displayed on our home page. Looking back on my news feed click behavior I realize I click more on the unique applications that my friends are using than on my friends themselves. This is probably why I get more and more "applications" updates in my news feed.

It's called a viable revenue stream and Facebook figured it out just in time. It is one thing to create a magnet that draws in millions of people and holds them there. It is quite another altogether to create a magnet that makes money.