>IMHO, this service is good for the visiting foreigners, or those 
>who will visit Tokyo a few times a year but not a resident.

You're dead on its really great...  and foreigners need it so badly : )
my all  time low was when Hitoshi called me from twenty feet away
to direct me towards the ticket window... heheh...  I guess I had
that panicked foreigner look down pretty good : )