http://www.dotrights.org/social-networkingespecially:
http://www.dotrights.org/how-protect-your-information-facebook-applications-your-friends-run(instructions for privacy settings)
Dear ACLU Member,
According to news reports, Facebook has called an "all hands" meeting
today to discuss its privacy policies. That's because they are facing
a brewing revolt among Facebook users alarmed by the company's
cavalier attitude toward protecting your privacy.
In recent months, Facebook has rolled out some very privacy-unfriendly
practices, from the "privacy transition" that took away
privacy controls to "instant personalization" that instantly shares
your personal information with third party pages without your consent.
At every step, the ACLU has been there to push back. Why? Because the
less control you have over your own personal information, the more
likely that information could end up in the wrong hands -- including the
government's.
Sign the ACLU's petition. Tell Facebook loud and clear that you want
control of your personal information.
http://action.aclu.org/site/R?i=3DTRcTNOQ9yuGpTqZdEAfY5Q..