By my reckoning, Ben Horowitz is the most thought-provoking blogger on leadership and strategy today. He’s also a lot more than a blogger. As one of the two name partners at Andreessen Horowitz, he is one of the most influential venture capitalists in Silicon Valley. As the cofounder and CEO of Opsware, a software company that was sold to Hewlett-Packard for $1.6 billion, he built a track record as a hands-on executive. And as one of the earliest product managers at Netscape, he was present at the creation of the dotcom boom.