""I've long marveled that advertisers haven't started plastering their pitches on the insides of bathroom stalls yet."Not sure which bathrooms the author has been in, but ads in bathrooms, in stalls and above urinals, are fairly common place in Europe.The privacy of the bathroom does leave a lot of time/space for vandalism though, so it's not that cost-effective. Screens in the stalls would have to be replaced rather quickly, I'm afraid."