A New York man is offering his body as a living billboard. Joe Tamargo runs LivingAdSpace.com, which just posted an offer on eBay to tattoo your ad on his body, permanently. Among the first takers is SaveMartha.com — which bought space on his right arm. The ads cost about $500 and, obviously, space is limited. "They say there's nothing better in advertising than word of mouth," Tamargo said to the Associated Press. And the body presumably shouts.