A California class action suit is challenging Facebook's "sponsored story" advertisements.  In Fraley v. Facebook, the lead plaintiff visited a website and "liked" the sponsor's product to qualify for a free software demonstration but did not knowingly give permission for Facebook to use her name or likeness to endorse the product.  Facebook attached her name and image to a paid advertisement, stating that she "liked" the product, leading to a lawsuit.  For a copy of the Court's order regarding the claims against Facebook, see http://epic.org/privacy/vppa/Fraley%20v.%20Facebook%20%28appropriation%20case%29%20Order%2012-16.pdf .