Plaxo provides a free service that securely updates and maintains the information in a client s address book. The company is used by millions of individuals in more than 83 countries, and enjoys a wide following in academia, government, as well as small and large businesses, including 98 of the Fortune 100 companies. Plaxo makes it easy for members to connect to their personal information, friends and colleagues in the manner that is most appropriate. The company has created a network of people whose contact information is always up-to-date through the seamless address book updating that occurs between linked members. Plaxo premium services expand the functionality of Plaxo and include Plaxo Address Book Optimizer, Plaxo eCards, Plaxo Mobile Access and Plaxo VIP Support. Founded in 2001, Plaxo is a privately held company that is located in Mountain View, Calif.