MySpace was a big thing while I was in College, which I didn't start until I was 30 (well, 29). I couldn't figure out what the big deal was. You got a hideous web page, whoopdie-doo.
None of the "big" social media has ever much appealed to me. I was on Facebook for a while, and I'll admit it was kinda nice to see how people I went to high school with were doing, but I just never cared that much.
I'm kinda stuck with it because of a group chat my friends have, otherwise I'd never bother.
This is a bloody brilliant summary. Well done!