If you play Call of Duty 4: Modern Warfare on the PlayStation 3, then be warned. A mob of hackers and glitchers have essentially overrun the game's online component, griefing the Hell out of the multiplayer and then posting Youtube videos of their nefarious chicanery. The videos tell people how they too can fly and walk through walls, helping the problem to propagate itself as others get wise to the unfair tactics.
"Apparently the new hacks are for flying (no clip), no reloads (endless supply of ammunition), god mode, laser sights and the ability to move through buildings," explains the Modern Warfare forum moderation team. "More mods may or may not exist at this time however. This is apparently devastating the community and is rampant ... The most affected game modes seem to be Search and Destroy but were reported to be in all gametypes. Hopefully something can be done to address this issue."
Infinity Ward has been made aware of the problem, stating that it hears the victims "loud and clear," and that it's looking into things.
I play Modern Warfare on the Xbox 360, so I don't know how bad things are on the PS3 side. It sounds like the game's being absolutely wrecked by cheaters, however, and I send out my commiserations to unlucky PS3 players having to deal with such nonsense. Have any of you been affected by these glitches? I'm interested to see just how bad things are over there.