content is a listing of postal addresses to send/exchange mail art. "use our postal system to exchange ideas, visions, sounds, stories, poems, manifestos and points of view"
Node Pajomo is a "Real World access point for mailartists, tape traders, and the otherwise postally inclined." It is a great source of listings and information for those interested in exchanging words and art (and anything in between) via the postal system. The Summer 2012 edition includes a cd that is the result of an Audio Mail art project.