When the Fair Debt Collection Practices Act (FDCPA) was authored in 1978, no one had any idea what social media was. However, in 2011, social media is rapidly moving to the forefront of the debt collection industry, offering primarily ways to locate people, but also new ways of haranguing people who haven't paid their debts.
A court in Orlando is allowing a lawsuit to proceed under the FDCPA which alleges that a debt collector used facebook to unlawfully harass a debtor. The debt collector was arguing that social media sites are not covered under the FDCPA, and this court did not agree. This is a very important issue, and likely a larger body of appellate law will develop quickly.