I have two wss://theforest.nostr1.com and wss://the citadel.nostr1.com

1) I rent them from nostr:npub10npj3gydmv40m70ehemmal6vsdyfl7tewgvz043g54p0x23y0s8qzztl5h  He asked me to test out his new relay hosting service for free and then I liked it so much that I started paying and added a second one.

2) theforest is just my follow list and #dev type of hashtags (so, a combination of frens and topic). thecitadel is an OtherStuff relay for wiki pages and repo events or similar.

3) I like having a little private club with my frens and having some "home" people can always find me in, since I don't always write directly to the big relays. And I like that I can keep anything negative or low-signal off of there and just read from it, instead of needing a long personal mute-list.

4) I'd like a bit more complexity in the whitelisting/blacklisting/AUTH options, or add an API so that I can use it more as a "layer 2" relay (filter relay). Like being able to have someone whitelisted on the relay, but not allowed into a private community hosted on the relay. Or being able to say, show me all of the events with the client hint "Wikifreedia" or show me Kind 01 notes with the "k" tag for kind 1234. That way, I could use one relay as a basis for lots of "niche" clients, instead of having all of the filter logic a level up, in the client themselves, as that eats into bandwidth and slows my hardware down and means I see lots of crap I didn't even want and have to mute it all away, or whatnot.