From the web site:
Hello. We are a collective of Occupy activists who came together to produce educational outreach literature for the movement. On this site you can download free, hi-res versions of our 4″x6″ info cards to print yourself, or you can purchase glossy, card-stock versions from us. (The text is on the back of each card.) Our prices are below what we pay to produce the cards, and thus we rely on donations to keep going. Unlike Wall Street, our finances are open and transparent.