i actually had some MP3s of songs from SYL which was bootlegs live songs that been recorded before the album get out. and this has been a good thing since i had to ear force fed and consequence before the devour single (which is , without any contest , not the best song of the album)
so then i had to get a clue of what was the new album as soon as possible and i still believe that as soon you have the possibility to get even a 1 min song extract of an album your looking foward to , that you hear it anyway because you know you will have the album anyway probably. as far as "keeping the surprise for the big moment and wait to have the full lenght all well prduced album underhand" to listen to it is meaningless , otherwise , why there would be something called demo songs before the album even get recorded.