I personally hate glitching, I hated it in 4, and definetly hated it in WaW. It ruins the game to me, I mean whats a challenge, without the challenge? Always remember, Cheating may seem cool, but Cheaters never win. Friends of mine in WaW would rush to get upstairs in Nacht Der Untoten to get in that corner glitch, while another stands on top of you. I just think it ruins the challenge, but that's just me.