Kindle
The Billboard Liberation Front has "apprehended, rehabilitated, and discharged" another site in San Francisco.
The advertisement, which had been attempting to sell and distribute petrochemicals, was corrected to promote the U.S. Department of Defense and their private subcontractors operating in Iraq.
Link (Thanks, dolface)
Correction: The BLF didn't do this, their comrades at the California Department of Corrections did. Their site's down right now, but here's a portfolio. (Thanks, Milton Rand Kalman!)