Or the dreaded 'this album is not available in your country'
Spotify is great (especially for free) but it seems that more and more artists are restricting access to certain tracks and albums. Examples being Explosions in The Sky, Jay-Z, Suede, Rosetta, Band of Horses, Alkaline Trio, Taking Back Sunday...even 'Freak Scene; by Dinosaur Jr has gone!
So will Spotify just be left with sampler material in future, and if so, who's going to keep paying monthly for it? I'd be tempted to pay if I knew absolutely everything was on it, otherwise it's back to buying cds and mp3s for me...