I really like this cool little idea from Nike UK. It’s called Nike Grid, launching April 23, and it’s a 24hr challenge to run as much as you can across London, checking in at phone boxes across London’s 40 postcodes. You earn points and badges as you check in to phone boxes, with one person crowned the king after 24hrs. Nice Facebook connect integration to drive the competitive element. Great idea for London youth using the streets as your playground, tapping into their competitive side and using geo location technology in a simple yet fun way.