Read Jim Colgan's Producer's Note on the fun of playing with the radio and check out Buzzfeed.com Senior Editor Scott Lamb's post on the absurd of satisfaction of playing Foursquare.
And to listen to our segment on the new iPhone app, Foursquare, and the fun it inspired, click here.
• Where you at? Foursquare maps it out
• Playing with radio: Behind the scenes of The Takeaway's "Where are you?" game
• The absurd satisfaction of playing foursquare
• The thrill of checking in with our listeners