Right, there are silly questions such as that. But when such a question is asked, I'd prefer to give them the benefit of the doubt. Perhaps they did read it and didn't fully understand the description, or whatever else. Having some degree of patience for players who have never played the game before I feel is necessary if we want the community to grow. Some of these people have never played anything like WoW before. Not an MMO, nor any RPG. If you reply to such a question with something to the effect of "Bro, read your spells and talents", that right there is going to answer a lot of questions before they can even be asked.
That said, I wasn't really speaking to the effect of silly questions such as that. Someone who is asking questions shows me that person is willing and wants to learn about the game, their class, etc.