I do this to backup all my files.
I paid for the 60gb idisk. So what i did is i DRAGGED the folders from idisk into my finder sidebar and anytime i drop a file in ANY OF THE FOLDER (MUSIC,PHOTOS,DOCUMENTS ETC) it automatically backups to idisk.
I also have my music & photo collection linked to idisk and i have both iphoto and itunes linking directly to it.
I then tell TM to backup the folders.
I dont have to worry about loosing my files. Everything is automatically backed up to apple servers & TM. The beauty of it is that if i get a new mac all i do is type in my
username and all my fiels are transfereD from the cloud to my new computer 🙂
Very similar to how dropbox handles the backup. i DONT KNOW WHY APPLE FAILED TO PROMOTE THIS FEATURE.
Not a lot of people know they can do this.