I dont think you can, as far as I know its just a collectible which you get an achievement/trophy for getting them all. It might enable cheats, but if it does I've never seen it, sorry.
Hope this helps.
You can't,and if your thinking about the [Enemy Intel] those are for achievements.
Cod MW3 has 80 levels online
it is a app that tells you news about mw3
No, it is not.
MW3 is after COD black ops.
no
There is no crossbow in MW3, but you can get the Crossbow in BO when you reach Level 33 and costs 2000 COD points.
cod elite comes out when mw3 comes out
Cod mw1. U meet him earlier in the game. I don't know why u would think mw3
Yes. How could a CoD game not have multiplayer?
Infinity Ward
It's not free