When you create a Map, you're often looking to plot Countries, States, and Cities. If you use name columns after the geographic designation it will help Bing guess what you're looking to display. For example, if you have a field of US state names such as "California" and "Washington", Bing might return the location of Washington, DC instead of Washington State for the word "Washington". Naming the column "State" will improve the geocoding. The same is goes for columns named "Country", "State", and "City".
