John Gruber has posted two great articles on the deficiencies of music subscription services, specifically Napster To Go: Magic 8-Ball Answers Your Questions Regarding the ‘Napster To Go’ Subscription Service and the followup Subscription Small Print. Gruber also makes an important point that iTMS purchases don’t replace CD buying, which speaks to the theory that new media do NOT replace old media (and never have), they supplement or complement old media.