It’s quite clever, when you think about it. The only way it could ever be a privacy concern for the user is if they do something they shouldn’t, such as share the file with others. If you think that DRM-free music is an excuse to start throwing it up by the gigabyte on Bittorrent, there could be public humiliation and, perhaps, a legal suprise or two in your future. ” (Wired Gadget Lab)
“With the launch of iTunes Plus, Apple’s become the first to sell DRM-free music from a major label. Not included in the press release is the fact that all such downloads are watermarked, containing the user’s full name and email address.