I just tried out nostr:nprofile1qqsth7fr42fyvpjl3rzqclvm7cwves8l8l8lqedgevhlfnamvgyg78spz3mhxue69uhhyetvv9ujuerpd46hxtnfduq3qamnwvaz7tmwdaehgu3wwa5kuegpz4mhxue69uhk2er9dchxummnw3ezumrpdejqj9swg4 and the thing I took away most is how much I love the concept of ecash to post on nostr. I will happily run an open public relay if each message came with a small amount of ecash (from a mint(s) the relay operator defined) to me in each message.
I also think users will happily pay this fee. There's about to be a lot of new Bitcoiners that have never made a Bitcoin transaction at all. Let's give them the coolest reason to use Bitcoin!