There have been some impressive apps for finding nearby services released lately. AT&T didn't want to get left out, so they are offering Speak4it, a free app that lets your vocal cords do the walking.
Say something like "Chinese restaurant," and the app will mark relevant hits on a map, on a list, or produce an augmented reality view using your iPhone camera, pointing you in the right direction.
Speak4it does things that Siri, Google and others do, but the execution is great and it certainly beats typing. Speak4it also has a unique feature where you can draw a circle on the map and the app will show businesses just within that area. If you draw a line, it will find places along that route.