Editor's Note: Entrepreneurs and Defining an EraThe vision and actions of entrepreneurs are changing the world. And you're a part of it.

One of the great and transformative things about being an entrepreneur is that you define a moment, an age or sometimes an epoch. Over the last five years, entrepreneurs have launched ideas and philosophies that have changed the way we approach everything from politics to economics to business strategy.

The vision and grassroots efforts of entrepreneurs like you are changing the way we think and behave as a society--not only in the context of commerce, but, perhaps more important, within the context of communities.