Sean Parker (born December 3 1979) is an American businessman and entrepreneur. Parker graduated from Oakton High School in Vienna, Virginia. He went on to co-found Napster, Plaxo and Causes, and was Founding President of Facebook, Inc.
In 1999, Parker co-founded Napster, a free file-sharing service for music that drew the ire of recording labels and the Recording Industry Association of America. Lawsuits by various industry associations eventually shut down the service.
Parker subsequently launched Plaxo, an online address book and social networking service that integrated with Microsoft Outlook, in November 2002. He left Plaxo for unpublicised reasons after disputes with two shareholders, Sequoia Capital and Ram Shriram.
In 2004, Parker began informally advising the creators of Facebook, and became its president when the company incorporated in 2004.