At the risk of sounding more and more like Chicken Little when it comes to social media, I saw this pop up on Slashdot over the weekend, and thought it might be interesting to share: Logging Out of Facebook Is Not Enough. The long and the short of it:
…logging out of Facebook only de-authorizes your browser from the web application, a number of cookies (including your account number) are still sent along to all requests to facebook.com. Even if you are logged out, Facebook still knows and can track every page you visit. The only solution is to delete every Facebook cookie in your browser, or to use a separate browser for Facebook interactions.
Check it out, and remember: When you visit Facebook, you’re the product, not the customer.
Update: Here’s an article from the mighty Lifehacker on how to stop Facebook tracking you.