Uhm, they're mostly for people with iPhones, but oh well:
There's this app called Nike+ GPS, and it allows you to track distance, play games of tag, and create challenges with people, etc. well, I was hoping for maybe a little portion of PC to use the app and exchange usernames and stuff so we can have community wide challenges and games of tag (it's really quite awesome, the website is Nike running or something)
...did that make sense?