Someone almost walked away with my wifes iphone recently and it got me thinking about the MobileMe finder service, it's the only service I think might be worth the money.
Anyhow I have 2 iphones and 2 ipads and they are all on the same Apple account. Would a single mobileme account allow me to utilize the finder service on ANY of my iphones/ipads if they all share the same Apple account?
Yes:
The Find My iPhone app is now available as a free download from the App Store.
If you lose your iPhone or iPad while on the go, simply install the Find My iPhone app on any other iPhone, iPad, or iPod touch to find it. Sign in with your member name and password to locate your missing device on a map and have it display a message or play a sound. You can even remotely lock the missing device to protect your privacy, or wipe it to permanently delete all of your data if you think that it won't be returned.* The app will automatically sign you out after 15 minutes of inactivity or you can manually sign out at any time.
In addition to the new app, the Find My iPhone web application on me.com now displays your device location on a full-screen map. Simply click the device on the map to reveal the full set of Find My iPhone actions.
To download the new Find My iPhone app for your iPhone, iPad, or iPod touch, visit the App Store. To use Find My iPhone on your Mac or PC, go to me.com/find. As a reminder, be sure to set up MobileMe and Find My iPhone on all the devices you want to locate.