If you're concerned about privacy, it might not be enough to hide your profile or limit who can view your personal information, a new report suggests. That's because social networking sites are sharing your personal info with tracking sites, according to the report.
"When you sign up with a social networking site, you are assigned a unique identifier," says Craig Wills , professor of computer science at Worcester Polytechnic Institute (WPI). "We found that when social networking sites pass information to tracking sites about your activities, they often include this unique identifier. So now a tracking site not only has a profile of your web browsing activities, it can link that profile to the personal information you post on the social networking site."
The study specifically points out Facebook, MySpace, and Twitter -- three of the most popular social networking sites on the planet -- as being guilty of leaking information. Using your unique identifier, a tracking site could then learn all kinds of things about you, including your name, address, email addy, gender, date of birth, what school you attend, where you work, and tons more.
But is it much ado about nothing? Only the tracking sites know for sure, and Wills admits that researchers have no idea what these sites do with the info, if anything at all.