You have a hunger.

How do you find something good to eat in this strange new city you're in?  You can just wander around and eat at the first diner or cafe you find, or you can use a ratings website like Yelp! to help you sort through the ridiculous number of places to eat to find specific kinds of foods (giant sandwiches, Chinese) your price range, places that deliver or are open late at night.  If you are the proud owner of an "intelligent telephone," you can even download the Yelp! "application" to this device that will use GPS to find where you are and recommend a place to eat near you.  We live in the future!