» Sat May 28, 2011 10:54 am
Yup as everyone said, its 10 character max. But to answer your other question, the XP you earn only goes toward the character that you are using. I think that this was implemented for the person like me that gets to level 50 in COD, then immediately prestiges because he hates having everything. Though the official reason is that they didn't have enough time to implement it.
EDIT: Ninja'd. Man I need to increase my WPM.