Uhhhmm, no, you can on Modern Warfare 2 though.
you unlock more emblems
You can prestige in Black Ops multiplayer if that's what you mean.
15th prestige
yes
in cod black ops there is a 15th prestige and in mw2 there is only 10 prestiges because to prestige in mw2 you have to get to level 70 but in black ops you only have to get to level 50 to prestige
kill more and die as less times as you can.
Google black ops prestige symbols. If none of the symbols are on your playercard, you haven't prestiged.
rc-xd
nothin
NO
No, you get nothing but a new prestige symbol.
In black ops, there are prestige levels. once you get to level 50, you can prestige. You do that 14 times and you can buy gold camo.