Social media originated in the late 1960s and early 1970s with the creation of early online communication platforms like email and bulletin boards. Major modern social media platforms emerged in the early 2000s, including Facebook, launched in 2004, and Twitter, launched in 2006. Social media allows people to connect, share information and media, and interact online through both websites and apps. While social media can help with branding and promotion, it also presents risks like hacking, misinformation, and privacy and reputation issues that companies must manage carefully.