I use a range of social media apart from TM. Facebook for keeping up with friends and happenings in the local community, Twitter for finding out what's going on nationally - it's usually well ahead of MSM although you do have to sift out the rumours from the fact, Reddit for more in-depth discussions on stuff, I like the philosophy threads especially.
If you like having a circle of friends and acquaintances with whom you can exchange news, views, and information then just like TM they provide a useful service especially in these days of non-existent social contact.
The way I see it, people like 'Professor Bainbridge' who complain about social media feeding them crap they don't want to see are simply demonstrating their lack of understanding on how to use the applications effectively. I just see it as another of those weaknesses like lack of numeracy or technical literacy that people seem so keen to flaunt as if it's somehow a good thing that they don't know how to do sums or work a computer. Weird.