Personally, I’m having trouble figuring out why I’d want to do this. An offsite backup is a great idea for my library, but the cost is out of control compared to buying a hard drive and putting it in a safe place. The idea of my music where and when I want it seems appealing, but I’m already carrying 30 GB in my pocket. Money-wise, what’s the convenience worth? Certainly not $200 a year to store my 180 gig collection.
Watching the Amazon Cloud Player video made me remember what it was like watching the first video for Google Wave and thinking “Who really has this problem?”