Dharmesh Shah is an entrepreneurship blogger, with most of his experienced derived in software.  However, his insights are considerably more far reaching, and his approach is not self serving.  The posts are entertaining and insightful.

Rob McNealy is a friend with his hands in a few entrepreneurial enterprises.  The one that is particularly meaningful in a value creation construct is  Contrived Media.  Rob helps companies and individuals understand what parts of social media are relevant to them, and how best to maximize their value.