Spot LLC (that cool company that make the little GPS tracking devices) and GearJunkie blog (started by a local Minnesotan) invite you to join them on a treasure hunt across the country. you will find two hidden locations in Minnesota (one near Minneapolis and one near the North Shore/BWCA. Ride to the location, check in with your Spot device and you get a chance to win free gear. Cool! Spot page for more info is here.