Out of the 3, one of them I mainly run, it has 40,000 posts, and it's free-hosted of course. Then one of them, is dying, and I decided to stop running it, I am really just waiting for it to die, I became more ambitious elsewhere really. The third forum is a forum with only like 250 posts, but it isn't even officially open yet, I am working on it. They are all free-hosted too. Also, the forum I mainly run, Cmt Sports Forum, is my #1 priority online.
The ones that I am actually a staff member on, are ones that has a nit community that only requires a small staff team, or the sites is ran by family, and I am there for extra help when needed.
I'm only full-time staff at two places right now (my host & my webmaster forum) but then I also freelance on sites hosted on my host/server occasionally too