I blackhole facebook.com at the domain level using pdnsd: neg { name=facebook.com; types=domain; } I have no idea why people are so eager to give away their privacy to Facebook and others to sell and whore-out to the highest bidder. It's akin to getting a handful of bright, pretty beads for your property.
What sort of sales and whoring-out has Facebook done? Is there really any value in one's social graph, or do we just hope there is so we can hate Facebook for being evil instead of for making us realize how dumb our friends are?
If there is value in the graph, then the protection works. If there isn't value, then this is a fail-safe.