Who is Bobby Newmark, or Count Zero from Count Zero and what is their importance?

Bobby Newmark is an everyman. He lives in a world that is formed by technology, but he is not conscious of what any of it means or how any of it came to be. Bobby is blinded to truths about the world by living in it. Bobby's greatest desire is to be a cowboy, a powerful computer operator who jacks into cyberspace to carry out missions for high-paying clients.