and you can't choose which files in a folder to upload, it does the whole folder.
Pretty cool, but I'm not sure what the benefit is other than you can have everything backed up on a cloud (which with large libraries of movies, mp3's and pics is a minor nuisance on a PC).
Thing is, why waste battery streaming when you can play directly from your Droid? Not to mention, it does you no good in places without service (like an airplane).
I'll wait for Google's service which I'm sure will be free, to a point. For a few bucks for more storeage, seems like a no-brainer as a back-up service.
Offline syncing of playlists and the like could be beneficial, too. But I just do that from my computer and then recopy my music folder to the Droid for a few hours. Not a big deal.