Facebook

Facebook dominates global social networking with over 3.0 billion monthly active users—nearly 40% of the world's population. Its aggressive shift to AI-curated feeds and Marketplace commerce sustains engagement, particularly among younger demographics. This user base is 20% larger than YouTube's at #2, giving advertisers unmatched reach for mass-scale campaigns. With 1.6 billion daily users averaging 33 minutes per session, Facebook's data-driven personalization yields ad conversion rates superior to the average industry rate of 1-2%.