David R BellDavid R. Bell is the Xinmei Zhang and Yongge Dai Professor at the Wharton School of the University of Pennsylvania, where he studies how we use the Internet and related technologies to search, shop, and sell. David developed Wharton's first course ondigital marketing and e-commerce, and he is an active angel investor in, and adviser to, a variety of successful Internet startups. David is a New Zealand citizen and received his PhD from Stanford University's Graduate School of Business. He divides his time between Philadelphia and San Francisco, and searches and shops online from both places. Read More Read Less