THIS! Oh my god, I don't know why this bothers me so much. I guess it is just because unintelligent people annoy me and that is clearly unintelligent. How much of a rush could you possibly be in to not capitalize your guild correctly? It isn't like it is something you'll only see once or twice, you'll see it every day.
Another thing is stupid character names. I can't tell you how many people on my server name their Worgens stuff like "Worgenfreeman", "Hairyfoot", "Imafurry", "Dogman", "Twoforms" or my all time favorite "Worgen" (with special characters of course). I've even seen people use special characters to name themselves Warrior or Priest. Do people honestly not have any creativity at all anymore?