Ask HN: AI exhaust is probably worth something to you or someone else

Every prompt, chat, and newsletter I burn through says a lot about how I think and work, but right now it's just sitting in 10 different tools doing nothing. Been wondering if people would pool theirs, either to get something useful back like a model that actually knows you, or to sell it to whoever's paying for this kind of data. Dumb idea or is there something here?