I don't like facebook and I would never join. Oceanspray (cranberry juice) have a competition going at the moment in which you have to log on to facebook. I tried to enter it and it tried to blackmail me into joining facebook in order to enter the competition. Instead of making me join facebook it made me decide not to buy Oceanspray - plenty of other companies making cranberry juice.
Faecesbook routinely messes with the privacy settings of its 'product' (the users) they have no say in matters. That said, I use FB but I try to keep up as much as possible with their abuse.