According to multiple sources, Facebook is currently the most popular social media platform, with nearly 3 billion monthly active users. Other social media platforms that are also popular include YouTube, WhatsApp, and Instagram, each with at least 2 billion monthly active users. However, its important to note that the popularity of social media platforms can vary depending on factors such as location, age group, and interests. Therefore, its important to consider which social media platforms are the best fit for your brand and target audience.