Lets say I want to ask Lemmitors a question. There might an AskLemmy community at my home server so I can ask there. But there might be a much larger AskLemmy community on a server elsewhere. Is there a way to ensure that people who subscribe to AskLemmy on the other server could also see my post on AskLemmy on my home server ?
This is actually the problem with mid sized communities. If there's two political communities and their content is 70% overlapping then you're obviously going to unsubscribe from one as your feed becomes cluttered. But then you're missing that 30% of content from the other community.