According to PrivacyChoice, 140 different tracking entities routinely collect information about users of the top Facebook apps. Trackers can correlate that data to profiles of individuals' browsing behavior across multiple Web pages in order to deliver more relevant ads. "It's up to users to know the privacy risk of sharing personal data with apps," says Jim Brock, PrivacyChoice founder and CEO.
Privacyscore's top score is 100. Deductions are made for sharing data with an excessive number of tracking entities, failing to honor deletion requests, failing to provide an opt-out choice or storing consumer data for long periods.
Gamemaker Zynga, for instance, registers an overall score of 82 for 17 Facebook games. The game Slingo, with 17 million players, scores 80, losing points partly because it connects to 59 trackers. Zynga general counsel Reggie Davis says Zynga welcomes tools such as Privacyscore. And Zynga's online tutorial, PrivacyVille, rewards its users for learning more about the company's privacy policies.
Privacy Choice website: http://www.privacychoice.org/