Bob Young is a collaborator. As the fourth ranked entrepreneur on Silicon.com’s 2006 list that’s a bit of a surprise. Most hotshot entrepreneurs are not collaborators. But Bob is different. He made his money as the co-founder of Red Hat, the world’s leading open source software company and now he’s lighting up the publishing world with Lulu.com who are about to publish their millionth book. He’s done it all by collaborating. Red Hat used the...