We had to share this clever ad campaign (first spotted by Creativity Online) from Aldo Isreal that rewarded passersby with a a free pair of Aldo shoes for posting an Instagram photo with the brand's name.

A mysterious sign set up on a street in Tel Aviv invited to people to take a picture of their shoes and post it to Instagram with the hashtag #aldo, along with their shoe size, and then ring a bell on the sign. Moments later, a giant gift box presented them with a pair of Aldo shoes for their Instagramming efforts. The video documenting the campaign claims it generated more than 500 Instagram uploads and nearly 800,000 interactions.