3. The method of claim 1 wherein said registering further comprises: presenting the first user with a list of subject matter categories when allowing said first user to identify a specific map location; accepting a response to the presentation of the list of categories; and storing data with said keyword indicating the response.
3. The method of claim 1 wherein said registering further comprises: presenting the first user with a list of subject matter categories when allowing said first user to identify a specific map location; accepting a response to the presentation of the list of categories; and storing data with said keyword indicating the response. 4. The method of claim 3 wherein said list of subject matter categories includes a hierarchy of categories.