Cool, thanks for the clarification. I checked it out and its pretty cool, It looks pretty complete as far as my friends list goes and definitely accurate.

The one suggestion I'd make is to see what you can do as far as adding more to the location markers. Ideally, something that IDs my friends without requiring me to click would be best. Maybe incorporating tiny profile images, or names (maybe truncated). I know it could get crowded pretty quickly so it would be something to experiment with for sure.