Time Machine is the new killer feature of Mac OS X Leopard that performs an automatic backup of your machine, and the race is on in to be the first to get it using Amazon S3 to save the backups. Amazon S3 is basically unlimited storage for $0.15/GB/month. When you combine that with Time Machine that can do almost continuous backups of system changes, a user could have a backup of their machine without ever having to connect to an external hard drive. For MacBook users, it’s the perfect solution; who wants to connect your notebook to an external hard drive every night? 
My money’s on ElasticDrive or JungleDisk (already talked about back in January) to get it figured out first. Who needs football when you can gamble on software development? 
Couldn’t Apple have let us connect Time Machine directly to iDisk? Despite iTune’s success, I still don’t think Apple gets the web…
All your data are belong to Amazon….
I’m backing up our MacBook to the iMac’s TM drive over wireless. It’s really slow but it works…
We have successfully gotten ElasticDrive working with OS X Leopard with time machine, we should be publishing a mac version shortly.
Why not just make s3sync take care of the TM drive?