COD multiplayer: worst excuse for a war game ever produced.
If you want my advice Warspawn, get yourself a copy of ArmA2 for PC. Less hacking and much, much more tactical reward. Even an old copy of Operation Flashpoint Resistance is a far more enjoyable experience than COD multiplayer. Biggest waste of time and over-hyped product since online gaming was created, imo.
nazi zombies is fun though. 
You're joking right? MoHAA got the ball rolling, and multiplayer is what made the WWII genre of FPS games so popular over the past 9 years...CoD has kept it going.
No online multiplayer PC based retail game is safe from the hacks. Almost every game published has cheats coded in...commands you can type in on the console for different things. And the more moddable the game is, the easier it is for hacks to be created. For first person shooters using any version of the Unreal or Quake engines, opengl hacks are the most popular and the most difficult to stop since the games are highly moddable.
Yes, the script kiddies and their cheats are bad...have been for nearly every FPS ever created...and some publishers have made attempts to stop them...most don't. The good news is those hackers get bored...the youngest ones only stick with a game until the next "popular" game comes out then they move on...the die hards keep playing until they get busted and banned and then they grab a keygen app and try again until they get bored and move on to the next game. They're all easy to spot once you develop a knack for it...takes time and diving into the sewer with the little punks makes it easier. I can tell you from personal experience, most are kids (high school age)...the worst are the "wannabe tough guys" living in their parents basement or some trailer park...and some "adults" with children who actually tell their kids it's ok to use a hack on someone's server (then they get pissed when you do a scan of their system and report some things to their local authorities
).
I stopped playing WWII first person shooters online just because it took way too much effort to keep my servers clean of the cheaters and unsupervised teenage turds...for every pseron we got perma banned or got into trouble with their ISP and the authorities, 10 more popped up...and because of the cheats this new thing IWN has done with Modern Warfare won't last long...the game is too easily hacked and without active 24hr moderation, the legitimate players will stop playing...all that will be left will be the script kiddies and they don't like paying to play online.
