But you also have to realize that content is not exact or clearly defined. Mining is simple from a pattern perspective, you complete hashing algorithms and get rewarded for it. With content, if people up vote someone baking cupcakes today will not be what makes it to the front page tomorrow. And if there is a flood of content like you suggest, it will constantly have to evolve to keep the voters interested. If everything is the same, voters will not up vote it. Take example some of these people copying articles... there are some article references that do $10,000, but now there seems to be a lot less. I have seem people bulk posting these types of articles and they are getting fractions of pennies from you or me who up votes him.