Facebook is a social networking service launched in 2004 by Mark Zuckerberg and his Harvard classmates. It allows users to connect with friends and family, share photos and videos, see updates on a newsfeed, and engage with brands through advertising. Though initially only available to Harvard students, Facebook expanded and now has over 1 billion daily active users worldwide, generating revenue through advertisements. It has acquired other popular platforms like Instagram and WhatsApp to maintain its position as the leading social network globally.
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