Create an excel spreadsheet of locations and addresses and build a map in seconds using Google Docs. It is so simple to quickly identify where physical locations are on a map for your online visitors plus give them a birds eye view to boot. You will need to have a Google Docs account to set this up. Upload the spreadsheet or start entering the data on a new spreadsheet. Insert a Gadget called Google Maps and select the range of data from the excel spreadsheet to populate the addresses of the map. Publish the map to its own web page or to a blog.
See below as the example.