This document discusses various artists and groups involved in adbusting (billboard alteration) such as the Billboard Liberation Front, Jack Napier, Ron English, Poster Boy, Siro López, Doctor D, and Theodor Craleo. It provides links to websites for these individuals and groups that show examples of their adbusting work promoting political and social messages through altering billboards without permission. The adbusting work is described as being dangerous, illegal, and redemptive in its attempts to change or comment on aspects of popular culture and society.