This does come into the realm of Ya Gotta Be Kidding Me!
Almost as bad as sports... if there is 1 square inch of field available... someone, somewhere will put a billboard on it.
Don't they have better things to do? It is not like banning liquids brought the terrorists to their knees or anything. If anything it just made them more thirsty.
from the "you gotta be kidding me" dept.:
TSA Pilot Would Offer Ads at Airport Security Checkpoints