Simple Guide Tool
This Google Maps mashup should prove very useful when you need to give someone directions or you want to show someone something on Google Maps. Using the site you can guide your friends around places you know using Google Maps, Street View and live chat.
Once you have set up a chat room the map state is synchronised across the different users, so if you move the map the other members of the chat room will see the same map movements. The chat application even has a video option, which means users can use their webcams to broadcast live video chat whilst sharing information on Google Maps.