When fan-bois start making rap videos (however amateurish) about something, you know it is hot. Badges Like Us, a new video by Matt Newberg and Boris Silver, about Foursquare, the New York-based start-up shows why it is on its way to becoming a mobile phenomenon. I continue to be a big fan of the service, but this video takes fandom to a different level. No, it isn’t going to win an MTV Music award, but if you like Foursquare, this will be a welcome fun break on this sluggish Friday.