As a corollary to this, I think it's important to understand that only certain types of companies and entrepreneurs benefit from giving out business advice to the entire world. Generally, these are the types of businesses that greatly benefit from publicity. One of the main reasons social web companies pursue (and receive) so much press is that it's in their best interest for everyone to know about their product because their goal is to acquire as many users as possible. For many other companies, being in the limelight is a huge liability that can quickly erode their competitive advantage. You never hear about these businesses, but in many cases they are far more profitable than the Twitter/Facebook type companies constantly paraded around the business press.