I'll have to get my sister to teach me Facebook again.
I only just found out that you can mute people on twitter. For instance I did it with Main Roads in WA. You can follow them but then mute them so that you only see their tweets when there is a problem in your area.
The internet is a wonderful thing
You are very considerate Pepe .... 
Facebook does have a good side as well as a terrible one and where people use it for genuine contact with their families, as well as the commerce side of it, it works well.
The sad side of it though for many, is where it takes over the lives of those who cannot control the addiction to it and it's like anything else, it is a serious problem for those people.
At the university last year, we did a huge research project which involved just about every student and their families on the campus and the results were astonishing. They were very happy to be involved and talked about the pros and cons quite openly.
The good side of social media is very good, the life disruption side is awful.
Having said that, I use the internet a lot for study and work, and I can use it for contacts etc, but not facebook or twitter.
We have our own forum with over 900 people on it now, lots of eBay folks there too, so for us, that's the best of both worlds.
The technology is getting quite invasive. I keep getting busted singing in the background whilst blue tongue plays and chats with earpiece and mike on the playstation.
I don't sing well, I wish he would warn me 
