assuming it's the same as Scuttlebutt (also gossip protocol) a relay is literally just a relay. There's no "home server". You don't have an account on anyone's machine. You just shove data out to "people" who are listening to you. In scuttlebutt the relays are configured so that anyone can ask it to "follow" them and then they send their data to it. Anyone who listens to that relay can get any data the relay has.

in scuttlebutt the problem was that I never felt like i could trust a relay to exist for more than 6 months, so i just followed every one i could. No-one wants to set up a relay, and relays have to have a static domain / ip so that you know where to look for them. It's not like tor where you can just leave your computer on and that's good enough. I expect the same problems here.