v: something that worked at one time, but was changed (usually for the worse) by someone who did not understand that particular thing's usefulness. You used to have something cool, but now your stuff
suxors. Often refers to MMOFPS's or MMORPG's, when the game designers change in-game rules and they screw stuff up.
"That game used to pwn, but now it blows. They took out the best part."
"Whatever I was doing, I'm not doing it anymore, I got nerfed."
"Our junk was so much better before the designers all nerfed it."