On privacy: Facebook has privacy shortcuts in a button on the upper right hand corner.

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One of the good ways to check how much information about you is available is by clicking the "Preview my Profile" button on the privacy pages.

BBC: Managing your privacy on Facebook

Zuckerberg announced that Facebook will add a Beacon opt-out button to the site's privacy settings, caving to the demands of a protest group created by MoveOn.org called "Petition: Facebook, stop invading my privacy!"

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