Go Reid & LinkedIn!: "After a slow start, the service has nearly doubled its membership during the past year... Unlike other networking sites' advertising-driven model ... But getting professionals to try and then trust a new service with their business contacts is not like getting teenagers to build a MySpace page. It's a much harder sell.... 'It will piss those guys off for me to say it, but if we can tip successfully, we are massively more valuable than Facebook - and I mean a multibillion-dollar business.'"