We turned on paid ads for the first time and got the signup bump we wanted... plus a wave of garbage. Fake form fills, throwaway emails, accounts that never come back.... So I added reCAPTCHA, and stopped reporting raw signups internally. We switched our north-star to activated signups (someone who returns and does the core action at least once). That cleaned up the dashboard, but it's a lagging fix. What I'm trying to get right is quality at the top of the funnel, before it pollutes the n...