Very cool feature on Yelp that I came across from @arainert, if you have an iPhone 3GS you can now see augmented reality of reviews. Once you’ve downloaded the newest version of Yelp, open it up and shake it three times. A feature called Monocle will then make itself available.
I tried it on Crosby St in SoHo, while not perfect it was pretty awesome. Sure people were staring at me wondering what the hell I was doing with my iPhone, but I didn’t really care. Seeing stuff pop up that I’d never seen before was quite the trip. This is the start of some pretty cool stuff.