1. A system for determining the position of one or more items of interest in a selected category, comprising: a database for storing information about the items of interest, the information including, for each of the items of interest, a geographic position and at least one associated category; and a plurality of ports for accessing the database through the Internet, each port having a user interface for accepting inputs by a user of the system and for indicating to the user the position of at least one item of interest.