some things that are really annoying about gamers are

-when they just call a game bad because of personal prefrence, and nit pick the game at small things that dont really matter, and dont take into consideration important aspects of it.

-when they review a game they dont own, but download. if you review it , you should have the decency to at least own it.

-when they are byast about certain gaming companies(hardcore fanboys). no gaming company is perfect.

-when they steriotype a game series because of one lousy game.

-when they overate a game jsut becuase ofone good thing(usually multiplayer).

and finally

-when they put down every system but their favorite, usually this happens to the wii being compared to 360.