My husband was the friend of a gamer friend. I'd never met the friend in person, but we'd online gamed for about 6 years, and talked on the phone a lot, and knew each other pretty well. So, him deciding that his real life buddy was a good match for me was spot on.
I met my oldest son's father pretty young; 19, I think. He was the friend of friends.
I had one boyfriend in between him and my husband; I met him on an online game.
The idea of dating was terrifying. I am a person who isn't casual about sex, and the idea that most circles I was in seemed to put little worry into that being just a part of dating wasn't okay with me. (I don't care what others do, it just wasn't something I could do.) Meeting at a distance gave me a chance to build a bond and get to know a person before I'd be put in any situations like that.