According to eBay, the popular payment service is on track to eventually generate more revenue than EBay's e-commerce marketplace. The entire effort is being led by Scott Thompson, a former Visa exe who joined PayPal in 2005. "He aims to capitalize on PayPal's head start and avoid the fate of EBay's auction site, which lost its lead in e-commerce to Amazon.com," according to the biz mag. "There is a huge opportunity for innovation and share gain in the payment space over the next five years," says Dana Stalder, a former PayPal executive and now a venture capitalist at Matrix Partners.