Ontolo is a super simple micro-app that will hopefully entice everyone spend a bit of time labeling other Nostr events. NIP-32, if you're not familiar, allows anyone to label/review/comment on any nostr post. It's an insanely powerful concept (thanks hodlbod, who wrote the NIP), but it's still pretty underused in clients.
Why would you want to have labeled events?
Discovery: Labeled events can be used directly by social clients–like damus or primal when trying to suggest content that users might like.
Training data: We're at the gates of the era of AI. Classification algorithms and machine learning have been pretty good to classifying content but with a training dataset they can become WAAAAAY better. Hopefully, labels in Nostr will become a public good that all clients can lean on to create their own AI models for discovery, onboarding, and a hundred other things I've not thought of.