Venture capitalist Josh Kopelman gives some excellent examples from his career of disruptive entrepreneurial businesses in his blog. He cites his investment in Jingle Networks, the company that runs 1-800-FREE411. We covered Jingle’s launch at DEMOfall. Americans spend $8 billion on 411 calls. Jingle simply makes it free and ad-supported. If successful, Americans will spend a lot less on 411 calls but Jingle will prosper at the exponential expense of the phone companies.