LinkedIn is a business-oriented social networking service that was founded in 2002 and launched in 2003. It is mainly used for professional networking and has over 364 million users worldwide. LinkedIn allows users to create profiles, connect with colleagues and professionals, find jobs and business opportunities, and follow companies. It is available in 24 languages and has offices in many cities around the world. LinkedIn went public in 2011 and is now a publicly traded company on the NYSE.