Just from reading the title I went wow that's really interesting....

And scary. What I would prefer to see is "get a prediction of answers to questions you make via the graph"

as a marketing tool "how would you react to a pricing drop in x goods?"

Or "what do you most want from y product?"

2this is just beginning.. . Look at Netflix built house of cards (apropos based on this) with graph input from their viewer base.

"How would fb graph inform my creation of x service?"