Cats in costumes and dancing hamsters are not only hilarious, they’re also furry, money-making machines. In this infographic,  Mozy explains the history, the allure, and the most popular types of internet memes. These little units of social currency have brought advertising dollars to companies like the Cheezburger Network and artists like Rebecca Black. Whether they are photos, videos, or animated GIFs, the best memes bring people together, especially memes involving cuddly animals.