Read the Fine Print
An article in the Washington Post says many privacy policies may not be all that they seem. Many users assume that when a site promises to never "sell your personal information," it'll be kept private… but often, that just means that the site is renting your information out to third parties, rather than selling it. Even trickier, many e-commerce sites outsource their shopping carts to companies that have privacy policies different from—and far looser than—the main site. Caveat emptor.