It's a really small service so I don't do any outreach. There are about a dozen users and I host a machine for one of them. It's almost all people I know locally. Friends, family, former coworkers. There are a couple of people on there that I've met online.

Not everybody uses every service, either. There's no single sign on setup here, so people tend to just use what they need.

I'm not opposed to allowing other folks access. I generally just let them come to me.