"Share-a-map is an AOL AIM plugin that let you share maps with a friend via AIM in an interactive way. This plugin can be extremely useful when you want to share a location, route or place with a friend or relative, plus other features like add images and hand drawing overlays, find an address or point, save your map, among others."
How to get it?
1. You can get this plugin here.
2. Close AIM
3. Execute the installer
4. Start AIM
5. In order to share your desktop, Share-a-map must be installed in your friend computer.
Full instructions are available on the Share-a-Map homepage.