Now that I've had a chance to use it a bit, I raise my "excellent" rating of
GLM to "very excellent"!  :)

I doubt we'll see that as a feature kin GLM unless and until there's a
partnership agreement with Cingular that includes sharing of location
information, and I'm guessing that (a) Yahoo has the inside track over Google,
and (b) it won't be free.

Using the "Select point on map" GLM function you can of course zoom and scroll
the map to locate your position if you know where you are, and you can often
speed up the process by starting with a reasonably close known place (e.g.,
nearest town).  I tried this on Interstate 580 out in the boonies near Tracy,
CA, and it worked fine to give me directions back to San Francisco (not that I
needed them).

What I do is keep a cheap GPS (well under $100) in my car, and when I don't
know where I am, I enter my current coordinates from the GPS into GLM, since
it accepts direct entry of latitude and longitude (like web-based Google Maps
and Google Earth, in the format "nn.nnnn -nnn.nnnn" for the USA).

For those following this thread, this new free Google mapping service is
called GLM or "Google Local for Mobile" (e.g., for cell phones), a freely
downloadable J2ME (Java Mobile Edition) applet called "Google Local".
Information is available on the Web home page at <http://www.google.com/glm/>.