Now, after several customer complaints, Apple has decided to finally allow us to use the “Find My iPhone” feature of the MobileMe site on your iPhone. This way if your friend has an iPhone you will be able to track yours down easier and on the fly without having to tout your laptop around.
“Now, if you lose your iPhone, MobileMe can help you find it. MobileMe includes a new feature called Find My iPhone. Just enable Find My iPhone in MobileMe settings on your phone. Then you can log in to me.com from any computer to access Find My iPhone and display your phone’s approximate location on a map.”