Facebook owns the rights to everything you post there.
One way I think they could monetize their data is by selling the ability to show friend’s pics on banner ads
If i see someone I know in a banner ad, I’d be much more likely to click, although that is pretty freaky stuff from a privacy perspective
This could be a start for a bad trend followed by other social media providers.
Privacy issues could jeopardize the cloud computing philosophy making people pessimist about the whole idea.
This should be discussed in more details.