Key Takeaways Reddit is seeing rapid ad growth driven by rising users, higher ARPU, and expanded advertiser tools. RDDT ad revenue surged 74% year over year to $549M in third-quarter 2025. META's ad revenue rose 25.6$50.08B as AI boosted engagement across Facebook and Threads.Reddit (RDDT) and Meta Platforms (META) are leading social media platforms that monetize user engagement through digital advertising. While RDDT is an emerging social media platform, gaining traction with community-driven advertis ...