bgcat57 saidI've a PC and iPhone. I've read the Apple page on this app/service and I don't see how it's different than when I sync my iPhone now. I already have access to the same email the iPhone that I have on my PC using Outlook. The calender is updated/synched everytime I connect my iPhone with iTunes. I don't see the point in this app.
If there is something beyond that, other than remotely wiping my iPhone of data if lost, I don't see it.
The main selling point is unified synchronization and storage on Apple's servers. Basically, cloud storage and push notification.
I don't think it's really worth the money, especially if you have a Gmail account. Google has an app that does the same thing, but free.http://www.google.com/mobile/products/sync.html
So yeah, the remote wipe and real time tracking are probably the only worthwhile features of MobileMe.
But I'm pretty sure there other remote wipe apps available. And ATT offers tracking services on all GPS enabled phones, for a monthly fee.