1. Pinterest's Q3 update showcased strong fundamentals with 11% user growth and 18% revenue growth, yet the stock fell 16%, presenting a buying opportunity. 2. CEO Bill Ready's focus on AI and platform enhancements has driven significant engagement and monetization improvements, especially among Gen Z users. 3. Pinterest's Owner's Yield has increased to 11.7% due to the price drop and earnings growth, indicating strong potential returns with continued revenue growth and efficient R&D spending.