I had a recruiter basically hold onto me after I passed more than one technical screen, even though I clearly did get all the way through the hiring process at either role. They were maintaining a pool of competent people.
Every time I answered their bait and they "just wanted a quick phone call", it was clear that they only were interested in filling their database.
Then I get spammed by them with irrelevant automated offers forever, unless I block them completely.
We solved this for email by aggregating spam/not spam ratings from tons of recipients. It’d be great if we could do that here.