A local optician booked outdoor ads on bike stands. The funny little trick: If you take a pic of this ad with your mobile and present your chef d’oeuvre at the store around the corner, you’ll get 10% off your order:
Nice little idea, indeed! I have to admit that I am one of those, who takes pictures of stuff in order to remember it (way too lazy to type*g*). Works for me – as for most people who use their camera phones… and makes this campaign trackable!!! Two thumbs up.