This past weekend, at a writer’s conference, I attended an agents panel. The moderator asked a laundry list of questions, including one about pet peeves. I won’t name names because I think these comments are fairly universal. The agents were a little reluctant, at first, to share what bugs them when writers send queries, but eventually they warmed up to the topic. The comments were made in the spirit of helping writers appear professional and save everyone time, so read them in that spirit of useful advice.