straycat on Nostr: Once it’s available and the marketplace is developed, your users will probably ...

Once it’s available and the marketplace is developed, your users will probably already be signed up to Brainstorm or a competitor service that supports NIP-85 so they can use them on clients like Amethyst. Vertex could easily be one of those providers. It’s not like you have to sign up every time you want to use the scores.

Yes, PR is widely deployed, with well known and easily exploitable weaknesses like link farm attacks, the solutions to which are band-aids. This attack, btw, is extraordinarily cheaper and easier to execute in the context of nostr and follows than in the context of internet keyword search and hyperlinks.