Third-party marketplaces concentrate most of the world's online shopping, and the model keeps expanding: social platforms now run marketplaces, US retailers are opening their marketplaces to international shoppers, and Latin America has become the most contested battleground. This FAQ covers how marketplace power is distributed, where the growth is, and what sellers should do about it in 2026.

Pinterest reported Q3 2025 revenue of $1.1 billion, up 17% YoY and slightly ahead of forecasts, as global user growth and AI-driven ad features continue to lift engagement. Monthly active users climbed 12% to 600 million, with international markets up 16% and driving most of the gains. Yet softer Q4 guidance spooked investors, sending shares down 20%. CFO Julia Donnelly cited “moderating ad spend” among US retailers facing tariff pressures. Globally, Pinterest’s AI tools—visual search, generative creative, and shoppable feeds—are strengthening its position as the web’s most frictionless bridge between inspiration and purchase. Consistency remains Pinterest’s quiet advantage.