Wow! Really accurate location finding WITHOUT GPS...
I've just downloaded the latest Google Maps Mobile to both my Skypephone and my Nokia N73. What's new with the latest version? Well there's a great new service called My Location (beta). What's so great about it? If my first attempt is anything to go by, it's really accurate. It's so accurate that I'm not going to post a screen grab as it's pinpointed my location to just a few houses away from my parents' house (where I am right now).
I'm in a bit of a built-up area but nothing like the centre of a city - so I'm very surprised by the accuracy. For those that don't know, the program uses cell towers to figure out where you are, not GPS satellites. Heavily built-up areas have more cell towers and, as such, they can determine where you're likely to be with more accuracy.
I've done a really bad job of explaining it - so I recommend checking out the links above as Google have a video that does a far better job than I!
Although I've got the latest version working on the Skypephone, it declares that the phone isn't supported for the My Location service, which is a shame. Oh, and I've yet to test how well it works with bluetooth GPS on the N73.