“Social media” are dangerous places for the unwary – ask the parents of any teenager who as been driven to self harm or even suicide by cyber bullying. But they can also
prove to be an effective way of filtering who really are your friends and enemies.
I use facebook a lot. I can post messages and interesting news items for friends and also limit who sees these items. I am outspoken on many things. That abrades some people, usually not my friends, but some times they are people whom I like. I am a professed arch conservative after all.