I know there was the whole conversation relating to Elon's acquisition attempt, around Twitter blue-checking every one of their users, to establish identity. If you could actually find a way to use your crypto identity to get paid back a fraction of the value back from the personal information you're producing as you navigate the web, that would certainly be interesting. Like, opt back into the world of detailed tracking (which Apple and Google have been up-ending by way of FLoCs and the like). Have your data attach to your BirdCoin wallet, and the system that discloses your detailed tracking also tosses you a few pennies each time somebody wants to use that information.

I still am skeptical you need to do this on a distributed blockchain for it to work, though; it seems to me like pretty much anything you can design on a distributed blockchain could be done at lower cost (in time, and cumulative processor cycles and storage bits) using a more traditional replicated/multi-sited database, administered by a trusted authority. That could be a for-profit company like Twitter or Google, or, maybe better, it could be some kind of co-op like entity, or a non-profit like the Mozilla Foundation. But fundamentally because proof-of-work costs orders of magnitude more energy, and proof-of-stake has such built-in rich-get-richer issues, the value proposition to the mass of users is going to look better with the model that uses a trusted central clearinghouse. The overall income less expenses of the business that does the central clearinghouse model is better, and they can distribute some of that back to the users, and pocket some of it, or reinvest it in improving their tech.