To answer your first question, mobile usability is limited with the free version (e.g. can only shuffle play, can't play straight through an album). Should the

To answer your first question, mobile usability is limited with the free version (e.g. can only shuffle play, can't play straight through an album). Should they stick to the free version? That's a value proposition that can only be answered by the user. >Following this suggested model, free users listening wouldn't help the artists at all - is that really desirable? I doubt it. Paid users are usually free users first. No free users means fewer paid users down the line.