@cwebber Thank you SO MUCH for this! This is the document I've been hoping someone would write for quite some time now, and answers a LOT of the questions that I couldn't suss out with my limited technical experience in this area.

I keep thinking of what infrastructure I'm running professionally, running the numbers through my head, and it would cost a *tremendous* amount of money - to a regular person - to run a busy relay.

What I am really curious about is if you've seen any discussion about how to, uh, run a series of parallel message passers? A federation of heaps? A RAID 10 of ... well, I hope that makes sense. I'm just wondering if it makes sense to have something in the mid-scale.