As far as the 360 goes, the perk glitch isn't crap. I did it all the way up to my 8th prestige. They patched it on the 360, though. Thus, I stayed at 8th prestige.
I can tell you how to do it on 360 and then that might give you an idea of how to do it on the PS3. I won't charge you anything or need your account info, I'll just tell you if you want to know.
I didn't check, but I bet if they patched the perk glitch on the 360 then they probably would have patched it on the PS3. Treyarch has a way of being gay like that. All the good and useful glitches like that seemed to be patched almost immediately. But the glitches that allow people to get under maps and boost kills in the cheapest, most annoying way possible they seem to take their sweet time on.