Is the thing still operational?
I signed up with facebook, but I'm unable to add my details to the map - when I enter my address, the save button only places a blue pin on the map and subsequently my profile remains empty.
I skyped the author about it.
The site is not of high priority to him unfortunately. But he's been helpfull before and fixing stuff. I hope he'll get around to looking at it soon.
I still think the service is very cool and needed.