I deleted my family/friend orientated account and re-signed up to ogle on the SEO groups. Might have been in the wrong ones but it was just full of egos and superficial nonsense, ended up just arguing with them and deleting it again. Think the fact my 2nd account only had two "friends" affected my credibility. Amusing how if you don't have the social background "ammo" folk think they can lay into you. Totally not worth it any ways.
No FB for me and I have a dormant Twitter account, look at LinkedIn occasionally. All full of hot air and projection, mostly. Maybe I've seen enough cat pics to not humour it any more.