One of the challenges I’m encountering in building Brainstorm personalized WoT relays is that it’s resource-intensive and kinda expensive (at least until I figure out some optimizations). But if you run your own Brainstorm, it will be relatively easy to calculate and provide personalized PageRank scores on demand to users who don’t have their own Brainstorm. Slightly more computation and you can provide users with personalized GrapeRank scores too. Charge a few sats for the service and you have a business model.