What do dirty diapers and deceptive ads have in common? (We’ll pause a moment so you can add your own punch line.) Now that’s out of the way, the action against Portland-based Down to Earth Designs — consumers know them as gDiapers — is the FTC's latest effort to ensure the accuracy of environmental marketing claims. But even if green isn't your game, the case also offers insights into what the FTC calls "unqualified claims."