What annoys me the repliers to the people double posting, double threading, not searching etc.
Double posting seems to be something of an issue with some people, and I don't know what it stems from. I know I have seen users on other forums (and perhaps being one however many years ago) that believes higher post counts are important. But that doesn't matter, especially not here. It's all about only posting if you have something to say and can contribute something. And that's a separate rule. --But my main problem with the double posting rule is that it only gives people cause to derail threads and not post things that don't contribute something.
Double threads (in terms of creating a thread twice) is as simple as telling the user to use one thread and move on. Duplicate threads (as in someone creating a thread of the same nature) is as simple as linking to the user and telling the user to use search.
Avoiding conflict is often as easy as not responding. I don't know why people think it's helpful to respond to someone who claims to have used the search when you don't think they have (even if they haven't) and tell them they are wrong. How does that better anyone? If the person did use search, you start an argument. If the person did not? Then what? They lie, or they admit they didn't. In the former you get stupid arguments, in the latter you get nothing. Once the user knows the correct thread and they have been told to use search the thread is over. Even if the creator wants to say they actually did, it doesn't matter to anyone else anymore.
I also find it annoying to read people responding to threads saying "this will never happen". Sure, if someone has an idea that requires a lot of work to get done, say that it's not a simple task and unless someone is really interested in the idea and has the know-how it will never happen, but that is all that needs to be said. You don't need to argue. And if the other person expands on the original idea and doesn't make an effort to tackle the requirements suggested, you don't need to say it again. They already know. People can dream.
But it's all "don't be a d*ck" and "reporting posts" (instead of telling a user they're doing it wrong).