Concept ACK.
This was something I struggled to get clarity on, when first learning about Nostr.
Nostr is marketed as permissionless, and so developers are more or less free to implement integrations, as they see fit.
This can be confusing, as questions arise like.. 'should I store large amounts of arbitrary application data myself, on private infrastructure, or is it acceptable to burden relays with this task'.
Obviously there are no set in stone answers to many of these questions, but to at least have a discussion around 'best practises' would be very helpful, especially for the newcomers...