Once upon a time, I was pretty active on LiveJournal.
https://deus-x.livejournal.com/
A lot of it for me was 20-something lonely bachelor moping with the occasional bit of interesting dross.
It was a really interesting kind of social network during the period in my life just before I met my wife. I feel like there were some neat people I was in touch with on there. I've lost track of nearly all of them since then.