"As long as our cities are filled with advertising they will be filled with graffiti. Graffiti is the poor man's ad campaign. You can argue about one campaign being legal and the other illegal but the visual difference is purely academic."
Los Angeles based television network KCET recently produced a video discussing billboards and graffiti on billboards. The video features Too Tall Jahmal, founder of Los Angeles based graffiti website, 50mmlosangeles.com, as well as billboard graffiti maverick Augor.
Read Too Tall Jahmal's entry on SoCal Connected
Other interesting videos on Los Angeles billboards produced by KCET: Billboard Confidential,
Billboard Confidential Part 2, Update: Billboards
Augor Tastes Like Gold Billboard
Tastest Like Gold Part 1, Part 2, Part 3