The latest update to the Yelp application for the iPhone and iPod touch sports a hidden augmented feature, called Monocle, for iPhone 3GS users. The hidden feature, which is activated by shaking the device three times, allows 3GS users to see nearby Yelp-reviewed restaurants overlaid on video of the user’s surroundings, showing the aggregate rating, type of cuisine, and pricing scale information, if available. Yelp for the iPhone and iPod touch…
