Sean Parker co-founded Napster, the music sharing service, by the time he was 19 years old. From there he went on to found online address service Plaxo, and then served as founding president of Facebook alongside Mark Zuckerberg. Mr. Parker’s products have created new ways for people to interact and have helped develop social media into a major communications channel. He has recently focused on enhancements to social networking, including location-based services and social philanthropy. Founded in 2007, his latest venture, Causes, has become the largest platform for online grassroots activism. Sean is also a managing partner of Founders Fund, a venture firm that has backed companies including Facebook, SpaceX, Quantcast, Gowalla, and Mint. The firm’s partners are all entrepreneurs who have founded, operated and scaled companies with a mission to lend their experience to the next generation of founders.