Yelp for iPhone's hidden augmented reality feature

Took me forever to figure this out. You must be on the "Nearby" screen to make it work

Shake it more than twice and you're playing with it.

A commenter on Cult of Mac got it going by holding the phone in one hand and tapping it against the other about six times. That's what finally worked for me. Thankfully it seems once it's activated, you no longer have to go through all the silliness.

Got it after a lot of shakes.

is not working for me at all I have an iPhone 3gs, what version is this?

If only the Brewster Box Lunch still existed...

I've shaken mine 40+ times and nothing. What is the secret?

My girlfriend *hates* my iPhone because I spend so much time playing games, etc, on the phone.

Yelp is the first application she saw and went "Wow." This thing is seriously cool.

It works but the fonts are too small and the icons too jittery for me to read. Zoom, a damping of the motion and turn the camera off would be big pluses.

I'm afraid but I've to point out that it's NOT Augmented Reality.
AR means objects recognition. Try the app, even the Metro one, point your iPhone to the ground you'll see the same information.

It's (just) the intelligent (way to) use of GPS + Compass and the fact that you see it through a camera view gives the impression of AR. It's the same as a map except you've got a live view. But it not depends on WHAT you see in your camera, just your iPhone magnetic orientation.

Real AR will come to iPhone by the end of the year maybe.

By the way, even without disclosure of the NDA, Apple doesn't allow you to analyze pictures coming from the camera view, you can just display it :)