Time for action – snooping through other people's accounts

Log in to Facebook in your browser and go to your personal profile page. Note down the URL; it'll be something like http://www.facebook.com/yournamehere (or http://www.facebook.com/profile.php?id=12345678 if you haven't signed up for a Facebook User Name at http://www.facebook.com/username/). Since it's your profile, you'll be able to see everything: Wall Posts, photos, links, interests, bio, and so on.

Now check out a friend's profile (and again note down the URL). You'll be able to see most of the same information as you can on your own profile—perhaps even all of it.

Are you in a network? If so, take a look at the profile of someone who is in the same network, but who isn't marked as ...

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