01 · How it actually happens
Being a regular does most of the work.
The people with friends here are almost always the ones who turn up more than once. Not for hours a night, and not making an event of it. Twenty minutes a few times a week is enough for people to start recognising your name, and recognition is the whole foundation. Everyone who is now a regular was a stranger typing into a room full of people who already knew each other about a month ago.
The other thing that works is remembering one detail. Someone mentioned an interview, a hospital appointment, a cat that needed a vet. Asking about it three days later is the single strongest move available online and it costs nothing. It's also more or less how friendship works everywhere else, which people forget the moment they're typing instead of talking.
Follow people you get on with. It's the difference between a good conversation and a good conversation you can continue, and it removes the awkward business of hoping someone happens to be online at the same time as you. There's no formal moment where you agree to be friends, which is one of the few things the internet does better than real life.
