Anthony Castagna has served as one of our directors since March 1999. Since 1997, Dr. Castagna has served as a non-executive director of Macquarie Technology Ventures Pty Limited, an Australian venture capital fund and wholly owned subsidiary of Macquarie Bank Limited, Australia's largest investment bank, and as an independent advisor to the Macquarie Technology Investment Banking Division of Macquarie Bank Limited, an investment banking company. He is also a non-executive director of early-stage private technology-based companies in Australia, Asia and the United States. Dr. Castagna served as a non-executive director of BT LookSmart, the joint venture between LookSmart and British Telecommunications, until December 2002. Dr. Castagna holds a Bachelor of Commerce from the University of Newcastle, Australia, and an M.B.A. and Ph.D. in finance from the University of New South Wales, Australia.