Poster Boy is an unnamed street artist out of New York City who edits advertisements to alter the meaning. He uses only a razor and cuts our segments of self-adhesive advertisement posters and applies those sections onto another to alter the meaning. His intention is to specifically create anonymous art so that it is free of copyright or authorship, probably also to remain disconnected from the illegality of the act. He sees the resulting work as a social piece. He's been referred to as the "Matisse of subway-ad mash-ups".
His work has spurned a "poster boy" movement where others imitate his work to depict new current political and social ideas. The original poster boy has been a big supporter of the work catching on, there are currently at least 3 or 4 creating new work, one recently arrested.