Did anyone notice something peculiar on page 9 of the April 9, 2007, issue of Advertising Age?

On page 9 is a full page advertisement for Advertising Age’s “The Green Conference,” created to promote eco-sensitive marketing practices. The message is somewhat obfuscated, though, by the media attached to it. There - in the middle of the page is a tipped in piece of paid advertising - a large and thick piece of lenticular plastic. Probably not eco-sensitive.