Social Media treasure hunts
Here’s a nice campaign from M&M’s Cananda engaging consumers across a number of social media platforms with clues to find the Red M&M http://www.facebook.com/mmscanada
Clues are seeded on the M&M’s YouTube, Twitter, Foursquare and Facebook which you then use to search on the Findred.ca site using a customised Google Street view map inteface.