Interesting experiment to see how Facebook decides which of your friends see your news feed.

The Daily Beast set out to crack the code of Facebook’s personalized news feed. Why do some friends seem to pop up constantly, while others are seldom seen? How much do the clicks of other friends in your network affect what you’re shown? Does Facebook reward some activities with undue exposure? And can you ‘stalk’ your way into a friend's news feed by obsessively viewing their page and photos?