I haven't read all of this thread. But I used to do online dating over ten years ago. A mixture of very good (maybe more quantity than quality) and very bad.
Three that stood out from the crowd.
1 Stood up on my Saturday night date with very good looking 21 year old angelic looking girl. I don't know why she wanted to go out with big ol ugly 40 something - but she contacted me. I get her on the phone on Sunday and she says "Don't go off at me, I've just got home from my Thursday night date." Eww. I'm pleased I didn't.
2 We had been dating for a few weeks or so and I said to her "I think you are probably a bit too promiscuous for me." She said "WHAT, I've only slept with three other guys since I stated going out with you."
3 Very lovely ladylike Spanish girl. Picnics, lunch dates. Nice girl take it slow. After a while I thought this is complicated, no job, no work permit... Maybe I shouldn't fall in love anymore with her. Eight months later I met a very pregnant her and loving boyfriend at a party. I said to her "Phew, I'm pleased I didn't get a leg over or I would have thought that I was the dad." Unbeknown to me at the time, and her smiling boyfriend, she was sleeping with a number of guys. She would have just chosen the one with the best bank account and said guess what?
May I recommend speed dating