If you have a Facebook account, you've likely seen your dull friends post some version of a "privacy notice" there recently. The idea is that posting it as your status will somehow prevent Facebook from, well, doing the things Facebook does with your information. It's nonsense. Don't be that person.
Here's the dumb block of text that's spreading like a bad rash on Facebook, typically accompanied by a plea to repost because the rules are different now that Facebook is publicly traded.