See the full post for more details
Facebook can’t stop people from posting your picture. But there’s a Facebook setting that prevents other users from tagging photos with your name. Choose that setting, and other users won’t be able to tag you or search for photos of you. Plus you get plausible deniability: Nope, that’s not me doing a keg stand at the company picnic.
As with many Facebook features, the no-tag setting is easy to use, hard to find.