Pre-Awake being fans that have known and listened to Skillet for years before their 2009 release of their Awake album.
Post-Awake, of course, being the opposite. This group of fans mainly only know of Skillet for the mainstream released songs "Monster" and "Hero" and really dont know some of the band's history.
Pre-Awake fan: Oh really? whats your favorite song?
Post: Monster of course. Yours?
Post: What?! THEY HAVE NEW SONGS OUT?!