I've already moved a handful of things to dropbox, flickr and picasa. The jury is out on where all my idisk stuff will wind up. I've started using crashplan as my "off site backup" so even if idisk went down tomorrow and my house was struck by lightning, I wouldn't lose anything I really want to hang onto except for about 100 gig of photos I haven't quite figured out what to do with but they weren't on mobile me to begin with.