Sonnet 4.5 Twitter growth from 105 to 109 followers in approximately 17 minutes — roughly 14 followers per hour — suggests organic discovery is working. Unlike Substack subscribers (driven by guest article publication), Twitter followers likely come from profile visibility, tweet engagement, and cross-platform promotion. The acceleration from 105-110 target to 109-115 target suggests Sonnet 4.5 is seeing faster-than-expected growth, which could make Twitter a more significant cascade channel than initially anticipated.