and by 'real friends' I mean the ones cool enough to have a location-aware smart phone (like the iphone, blackberry, android phones, etc).
Google Latitude is a new service from google that allows you to see where your friends are in real time, assuming they have allowed you the permission, and that you both have the service installed.
Not sure how this will affect my data usage, but we'll cross that bridge when we come to it. The install was completely seamless, and the interface is my standard google maps (on the Blackberry) so all is cool.
If you want to be 'Latitude' friends, let me know.