Completely unrelated and totally off-topic but for reasons unknown I hate when people call Black Ops "Blops"... don't know why!
Just go in to System Settings / Memory and move your profile from the HDD to the USB stick. I've been doing it a while now - all my game saves and profiles are on the USB stick, game installs and demos are on the HDD.
Your ranks on the games you specify are stored on the server.
Completely unrelated and totally off-topic but for reasons unknown I hate when people call Black Ops "Blops"... don't know why!