[citation][nom]rigaudio[/nom]They sell your personal info to advertisers for many American dollars.[/citation]
Not quite true. They use your information to give you targeted adverts. They don't give advertisers direct copies of all that you put on your wall but advertisers can pay Facebook to show their adverts to, for example, people who have the interest "cats" or "overclocking" on their Facebook page. Hence why, if you have both interests, you may get an advert for a phase change cooled perpetual motion device composed of a cat with a buttered sandwich strapped to its back.