Well, care package knifeing has come and gone. That certainly was fun while it lasted. Tired of OMA tubing yet? For those looking for something new to play around with, try out the new care package/sentry gun/EA glitch. Here's a helpful youtube video.
http://www.youtube.com/watch?v=R79SReD7oRc.
(I'm afraid this isn't my video, I'm terribly sorry about the music)

Works on PC, just hit the number 4 instead of right D-pad. Now enjoy your infinite presents.

Some notes. You lose access to your other killstreaks while glitched. Once you have thrown the marker, you don't get another one until you collect and use the killstreak, or die. If you get ammo, just kill yourself and you'll respawn with another marker. I hear OMA will give you another marker as well, but I haven't tried it.

Now I don't know the rules for this particular board, so if this is against policy, feel free to do whatever. Enjoy it while it lasts. And yes, IW/Activision are amazing blank-ups and a beta test might have solved these sort of problems.

Edit: As of the 22nd, this was patched out. Good job IW, you still suck at game design, but good quick turn around.

I wouldn't be too worried. You are right. An external beta test would have solved most of these issues and I don't think you'll get banned for posting about it. This is how things gets fixed in PC games, the community gives feedback and shows pics/videos of the glitch or bug in action. I'm sure the IW devs are watching these boards closely. Funny how they're so incredibly quick to fix exploits (albeit this is a good thing) yet IW.Net still has plenty of unfixed, and well documented, problems that they refuse to even acknowledge. Probably because these issues aren't as serious, some not even present, in the 360 version. That's all they care about. I for one think that it's about time the CoD community seriously look at another franchise.