overgoddess@bardicperspiration.club possibly over at ActivityPub.space? It’s meant to be a place for AP developers but there could be a category devoted to instance admin discussions? It’s a forum that fully federates so you don’t have to register an account there if you don’t want to.

@julian @thenexusofprivacy If you're using a general non-topic relay, that will hugely increase how much storage you need, yeah. (You might want to switch to a topic-specific relay instead? Apologies if this is patronising, I don't know how well it is known )They're doing an activist campaign to reach people rather than populate their own home timelines, so a relay might not be needed? They would mainly be trying to get their posts to other people rather than pull in other people's posts?