You forgot 1 other nasty group: those who feel better by judging others. You won't see them post or comment, but they will judge everyone behind their back. I'

You forgot 1 other nasty group: those who feel better by judging others. You won't see them post or comment, but they will judge everyone behind their back. I've see several cases like this from up close, including one extravagant girl (who wasn't doing anything wrong, just posting a lot), that basically cut out her entire family so she could post without all the gossiping.