Clodfobble,
I used to have a lot more time for it. Really. This used to be one of my big time-wasters. I used to telnet into the Waffle BBS-based predecessor of this place in the mid-90's. I used DDial for a number of years, and I posted on Usenet (yay comp.sys.cbm). I also used to IRC a lot.
Now I'm down to Facebook, LinkedIn, and here. Here is because I started calling it over 22 years ago. Facebook is because that's where pictures of my children and all of my friends' children are posted, and because that's where everyone else is at.
LinkedIn is entirely professional. Most of the professional organizations I belong to have LinkedIn groups, and those have information I need in them.
Facebook is the lowest common denominator. Everyone is there. More adventurous people have Ello, Google+, or the other networks. Like I said, I can get the info I need at a glance and be on my way

.