Party A states some claim / makes an observation.
Party B curates that as relevant.
This isn't always viable, and can of course be gamed or subject to low-quality curation. But it at least disintermediates interests.
The Internet Archive uses a similar mechanism in choosing which YouTube content to archive. It monitors Twitter for YouTube links, and uses that as a filter for curating YouTube content. (Brewster Kahle in an interview or documentary I'd watched / listened to recently. Probably a video as it doesn't seem to be in my podcast episodes index.)
Oh, and thanks ;-)