I actually think this is awesome. This means a few motivated individuals can put together a niche social network and have a guaranteed buyout from Facebook. Basically, if you get big enough, they have to buy you.

I think the only option they really have is to spin off new social networks to cater to new generations and become just a holdings company for them. Sort of a YC of social networking. Their main advantage would be the ready source of funding vs a random college student thinking up the next Whatsapp or Instagram.