CP+B's subservient—but not famous—chicken.

Everyone in the marketing business has heard of Subservient Chicken, Will It Blend? and the Serenading Unicorn. These campaigns are legendary within the business for the vast audiences they created.

But have you ever wondered how many people in the general population—i.e. those whose jobs don't depend on following viral marketing campaigns—have ever heard of these endeavors?

Heat, a San Francisco-based ad agency, took some of the most famous (and brilliant) examples of digital marketing out there and polled both "normal" people and ad/marketing professionals to see who knows what. The results are sobering. Internet famous is not the same thing as famous, it turns out.

(Heat also created an awesome infographic about how ad people use social media incredibly differently from the rest of the world ... they also are more likely to be sloppy messes at office parties).

You might want to sit down.