Let me be more specific so I dont feel dumb here!. It's supposedly a type of graffiti that has a "hidden message" behind all the lines!. Here are some examples:
http://www!.graffiti!.org/does/001_does_sa!.!.!.
http://www!.graffiti!.org/does/does_expo20!.!.!.
http://www!.graffiti!.org/does/does_sao_pa!.!.!.
http://www!.graffiti!.org/does/does_sao_pa!.!.!.Www@QuestionHome@Com