There is certainly a space for advertising. Off the bat, a brand could use nostr:nprofile1qyjhwumn8ghj7cn40faxymm594ex2mrp0yhxyatvd35hx6rzda6kuare9e3k7mgprfmhxue69uhkummnw3ezuum4v3hkxctjd3hhxtnrdaksqgxfax7upvpuyx7nx7sjmn6mgc75nld0azz25y4mj5xpst57fklfhqy6fmt5 with a large bounty to solicit engaging content about a product. I'm sure some solution could be made where a rebate could be advertised and redeemed out over Nostr as well...
Discussion
Yeah some kind of rebate of paid attention models is the most likely way ads will come to Nostr