Yeah totally. Could you even build some kind of script that node runner could install next to their node that somehow signals the lowest fee someone is willing to take? If you built that service you could also report that information back to your own server to tell advertisers what range they should set it at. (ex. Reach 10 nodes by paying 10k Sats, reach 100 nodes by paying 1k Sats, reach 10k nodes by paying 1 sat). I guess there are privacy concerns with that scripts but it could be done in a privacy preserving way. 🤯🤯🤯
Discussion
Node runners can definitely reject payments under some threshold. Htlc firewalls exist. Don't know how Satogram node would get the target node's min amount.
For lnurl however there's the minSendable field. Perhaps a new minSendableForComment type of field needs to be added to the spec.
Ah I see, I was thinking the process running on the users node would occasionally ping your server with their min sendable amount that you could store along side their node id in your db. Maybe that’s too complicated though. I like your idea of updating the lnurl spec more.