Here's something I spotted on a flyer the other day.
bazaar.me.uk is the home of Dave Wood.

'From morning till night we walk thousands of footsteps
Our footsteps cross the footsteps of others without a thought
We know where our footsteps take us
But we never see where else we could have gone if we walked in other peoples' footsteps
Before December 25th take your video mobile phone
Video your feet as you walk and record the story of your footsteps
Save the footage (pun unfortunately intended)
Include your name
Email the video file to footsteps@bazaar.me.uk
Re-visit the website mid-january and see where your footsteps have been since Christmas'

www.bazaar.me.uk/footsteps/