Everyone here is discussing whether this is a good or bad idea, but I’m wondering if it’s even possible. I don’t think advertising really works without centralization. On decentralized protocols, advertisers have no knowledge or control of the advertisee’s client software, which could simply say it displayed the ad and then claim the sats. Even if phone apps didn’t do that (Damus and Primal have a reputation to uphold by not publishing apps that commit advertising fraud), people could run servers that have their nSec and scan for incoming advertising requests and simply respond to them and sweep the payments.