Key TakeawaysPinterest shares fell early Friday following a third-quarter earnings report with lower profits than expected.Revenue came in narrowly above estimates, as the company said its new AI advertising features are making ads on the platform more effective.Pinterest's fourth-quarter revenue projections came in below expectations, as analysts said Pinterest is facing "pressure" in food and beverage advertising. Pinterest (PINS) shares slumped Friday morning after the social media company's third-quarte ...