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Every time you go to a website with the Facebook like button, they see your IP address and the website you're on. Go to enough websites from that IP address and
by jonnymac 9y ago
Every time you go to a website with the Facebook like button, they see your IP address and the website you're on. Go to enough websites from that IP address and they can get a good idea of what you like. In addition, it is very easy to get your real address from your IP address, or at least your general area. Combining these gives them a good idea of who you are.