Yelp as a challenge to Google

When I need to find a pharmacy, or a Starbucks, or a gas station, my starting place is usually the Google Maps app on my iPhone.

But my wife finds herself using the Yelp app more and more often as her default starting place in searches for local businesses, and definitely when searching for a nearby restaurant.

Google isn't about to lose its #1 position in search anytime soon, but the rapid rise of Yelp within the local business category shows that Google's predominance won't necessarily last forever.