LinkedIn is a business-oriented social media platform. It was launched in 2003. It has 255,000,000 estimated unique monthly visitors.

LinkedIn's CEO is Jeff Weiner, previously a Yahoo! Inc. executive, and the company was founded by Reid Hoffman and founding team members from PayPal and Socialnet.com. As of 2013, LinkedIn has more than 300 million members in over 200 countries and territories.

Its main focus is connecting people from similar professional backgrounds. It allows its users to create profiles and "connections" that may represent real-world professional relationships.