A few years ago, Mathew Gross, 32, was a free-lance writer living in tiny Moab, Utah. Rob Malda, 28, was an underperforming undergraduate at a small Christian college in Michigan. Denis Dutton, 60, was a professor of philosophy in faraway Christchurch, New Zealand. Today they are some of the most influential media personalities in the world. You can be one too.
Gross, Malda and Dutton aren't rich or famous or even conspicuously good-looking. What they have in common is that they all edit blogs: amateur websites that provide news, information and, above all, opinions to rapidly growing and devoted audiences drawn...