What do others do that creates friendships here... I've seen it happen but still don't know how they do it. I've found people here I like.
I have found that I end up commenting on lots of the same threads as someone or they comment on the same threads as me. At some point it becomes clear that our views or experiences align. After that, usually there is some catalyst/event on site that promotes a PM from one or the other. Things then continue if it feels appropriate and if not, they don't.
Some people I converse regularly with in PM but seldom in open forum, whilst others I communicate with in forum but less commonly in private. Every relationship, no matter how close or separated is organic and has its own ebb and flow.
I tend to find this quite natural, but I can understand how it can be hard to communicate, especially over the internet, where nuance can easily be missed due to a lack of observable body language.
I have observed however, that often the way people communicate online has its own mannerisms that replace body language, and you can often tell when someone is approachable or not from how they communicate.
I think if you want to pursue closer connections with people, then you have to make it obvious that you are open to such connections by specifically engaging with them in open forum
in a similar manner, so that they can respond if they want to, but there is no pressure either.
Also, things often happen very gradually over time, where a point approaches and someone would be surprised if you
didn't contact them privately.