The other day, Google Mobile launched two new features (amongst others). One feature has been asked for ever since Google Latitude launched. The ability to use this program on your iPhone. Well, now it is here, well, kind of.
Apple wouldn't allow Google to build a native iPhone app for Latitude because (I think) apps cannot run in the background and constantly pull your location. Instead, Google made it work over the mobile browser at http://m.google.com/latitude. The new iPhone browser supports geolocation services, so Google uses that to pull the location of the individual and then plots it on the map. Here are some pictures:
Also, for you who don't have iPhones (seriously, no iPhone yet?), Google released map layers for Windows Mobile & Symbian devices. More on that over here.
Forum discussion at Google Mobile Help Forums.