Social media sites are online platforms that allow users to create, share, and interact with content. Popular examples include Facebook, Twitter, and Instagram. These sites enable people to connect with friends, family, and communities, sharing updates, photos, and videos. Users can engage with content through likes, comments, and shares, fostering communication and collaboration. Social media also serves as a tool for businesses and organizations to reach their audience, promote products, and gather feedback. Overall, these platforms play a significant role in modern communication and information sharing.