Ok this is too cool. Bell Mobility has this Location Service called MyFinder. Using Cellular triangulation they can figure out pretty close to where you are. It costs 25cents to locate yourself on any Bell Mobility Cell phone with a browser (plus air time ). You can do things like find the nearest gas station to where you are right now (or ATM, restaurant, etc.) and then using Map Point will give you driving/walking directions. I tried out this service in Waterloo and it found me within a block of where I actually was. Bell says within 150m. In my example that would be pretty close. So your mileage might vary (no pun intended).
If you are lucky enough to have Sanyo 8100 or an Audiovox 8450/8455 you can also use MapMe service which will download a map to your device and your location plotted on it - along with nearby places. This appears from the screenshot to be something along the lines of a Pocket Streets derivative. It costs $5 (one time) for the software, and again 25 cents to be located per use plus air time (unless you have the Mobile Browser Bundle).
Bell Mobility also has a few multiplayer games that you play against people nearby. Less cool. Get a life.
Perhaps the most (potentially) practical is a #TAXI phone number that connects you with the first available taxi based on your location. It uses many cab companies. It sounds like they might find you a taxi parked around the corner but I don't think it quite works that way. It found my city and routed me to the phone number of the nearest taxi company. It also sent me a text message with their direct phone number. A $1.25 a call? The taxi company should pay for that - no?
www.bell.ca/finderservices
You can develop applications using this service too. If you are lucky to live in Canada and be a Bell Mobility Subscriber - then you are in luck (as I am) since Bell is now providing realtime MS MapPoint Location Service. It almost makes up for being on a CDMA network and having that limited phone selection problem.
Microsoft MapPoint Location Server is a new component of Microsoft MapPoint Web Service. You will install this component (along with SQL Server) in your enterprise and using the MapPoint Web Service and location data from your provider you can get an inventory of all the people in your company and their locations. For doing dispatch type of applications, 150 meters is probably close enough. General Information on both here (http://www.microsoft.com/mappoint)
MSDN Universal, Enterprise, and Professional subscribers are eligible for a free subscription to MapPoint Web Service (a requirement of using MLS)(https://s.microsoft.com/mappoint/msdn/msdnspec.aspx)
Bell Mobility Developers Web site for location based services (http://developer.bellmobility.ca/lbs/)