Out of Date YELP

I think you'll have to go ask YELP (www.yelp.com). It sounds like their data is out of date for your location -- I can only say it works pretty well for where I am, so I guess their up-to-dateness varies from place to place. Perhaps if you can bring it to their attention, maybe that'll give them an incentive to do better. In the meanwhile, I suggest you give the iPhone's built-in map program a try. It takes a bit of digging, but it has similar functionality to Yelp. Like, you can type "bookstore" in the search box, and it'll show you locations of bookstores near you. If you are lucky, it might have a better database for your locale than Yelp.