YP Mobile makes it easier to find businesses and events in the area. You can search by categories (Banks, Bars & Clubs, Discount Stores), and get maps and directions to your destination. I used it to call a Harley Davidson dealer in Osceola, Iowa to ask them about the road condition in their town. If you want to know what’s really going on— talk to the locals; with an iPhone you don’t even have to be standing next to them.
I also use Yelp, a free app that provides similar information as YP Mobile, but it also allows you to post and read reviews. I keep both apps on my iPhone; if I can’t find the information I’m looking for on one of them, I check the other.