psp: no. ps3: no.
no.
It's on the 360/PS3, which rarely has games with legit cheats on them. So the short answer is no.
No, there is not any cheats but there is lots of unlockables. Here is an link for some of them : http://www.gamespot.com/ps3/action/callofduty4modernwarfare/hints.html I hope this solves your problems, Answer-Yoda.
You must go to a website for the game that you want the cheats for and see if any are available and listed
no my friend unfortunately there arent
ZOMBIEKILLZ gives you unlimited ammo in any zombie map
yes there are cheats for Infamous for PS3 u just have to go to the site cheats guru then u can find the cheat u wanted to know Or you can try ChapterCheats for cheats or Video walkthroughs!! http://www.chaptercheats.com/cheats/playstation3/58005/Infamous-2-Cheats.htm
Yes, you can play multiplayer on the game Fracture for PS3. It is a third person shooter that it set in the year 2161.
you cant unlock the boggy man
No there are not.
no