facebook

Facebook advertising's latest makeover could raise new unease about privacy, tracking and snooping by the popular social networking site. Consider: Facebook already has more information on you than your own mother, and now it can serve up ads nearly custom-tailored to you on web pages when you're off Facebook.

The social networking site last week began testing Facebook Exchange (FBX), which allows advertisers to buy Facebook ads that target its users off-Facebook browsing activity.