Facebook Blackmail
Tracking a friend’s posts to find out what they're hiding, then using it to humiliate them in front of everyone.
Your friend posted about a failed interview. You say: 'You’re a loser. I know.'
Your friend shared a picture of them wearing a silly costume. You tag them: 'You’re a clown. Everyone knows.'
Your friend posted about a bad haircut. You message them: 'You’re a disaster. I saw it.'