I had a facebook account years ago, I have not logged on for ???
Every week now I still get so many requests that **** wants to be my friend. I've never heard of these people!!
Facebook might be the best one for starting rows with your neighbours. There have quite a few rows in the middle of my street, with one family screaming at another about Facebook comments. Perhaps it should be renamed from a 'social media' website to an 'anti-social media' one?
(BTW: I don't use either. I might be a boring internet geek but I'm not THAT sad!)
On Twitter I follow my local police, my council, local news, BBC News, my MP, the Highways Agency, Trading Standards, Action Fraud, Virgin Media etc for updates and info relevant to me.
I use it to complain directly to companies if I have a problem with goods, services or other issues and get much better results than email, letters, phone calls.
That's the thing HC, you can make what you want of twitter. I don't use it for any of the things you do, it's all about the comedy for me. There are so many funny, clever, interesting people out there that's I'd never have heard of or interacted with had it not been for twitter. It's often a nice little break from reality. But of course your question can only really be answered by those who never used it ;)