Great idea! Those stupid ads causing trouble again!
I seem to recall reading (a LONG time ago) a story where Clark objected to that photo shoot. He should have tried harder! Love that more of these stories are still being written.
Here's an idea for anyone to steal: Superman goes to rescue someone on the street (stop a mugging, etc.) and happens to be standing right next to one of those posters. Who sees it and puts together the clues?