For me the most frustrating part of the gaming community, aside from the hackers and griefers, would be people who don't seem to comprehend the marketing materials and game FAQs. I admit there was a time when I suffered from this problem - I'd buy a game, be surprised by the content, and then insist that the developers make changes to the game to meet my requirements.
I honestly feel bad for developers on this point.
They're in a tough spot.
For example, I'm posting on a game forum where people are complaining about 'choke points' in mining. They're upset that players are forced to mine rare ores in well known locations that have limited entrances and exits. They don't like this design because PKs make a nuisance of themselves and mining is difficult. The suggested fix by the playerbase: Spread rare ores out all over the map so that we can avoid PKs. This is in a PvP game, people.
Naturally, there is nothing wrong with making suggestions to the developers on how to improve a game; however, this suggestion seems to fly in the face of an obviously intentional design choice that encourages player conflict. In a PvP game the mechanics are supposed to encourage PvP - not work to avoid it. Again, If you buy a PvP game then understand that it is going to be put together in such a way as to force player conflict.
To me this is almost as ignorant as loading up Camelot Unchained and asking the developers when they'll implement intergalactic travel, trading, and space warfare. Hey developers, thanks for the new chainmail armor, but I'm really wanting to get some cybernetic implants - when does that update drop?
Reflexively I want to blame the developers in that they need to do a better job of communicating; however, for the game I'm talking about (Legends of Aria) the website brags about player vs. player conflict and that the world will be dangerous out in the wilds. If you don't 'get it' after viewing the website then I don't know what the developers could do to make it clear.