Yelp is built on the premise that people really, really love to review things, and that this bizarre impulse should be harnessed for good. With a massive database of food/drink/everything else reviews, easy navigation, inbuilt maps, and augmented reality, it's tops.
From The App Developers: Looking for a burrito joint open now? An Irish pub nearby? A gas station you can drive to before your tank hits empty? Yelp for your iPhone is here to help. Use us to search for places to eat, shop, drink, relax and play then read reviews from an active community of locals in the know.