MA threads in forums that make me want to throttle someone's neck:
* any topic with any the following words in it's title: Age, Belt, Best, Bruce, Master, Ninja, Deadly, Numchuck, Hachimaki and Street.
* threads where the poster doesn't accept any answers to the question/advice they were asking.
* any thread which is started by a 10th dan who is younger than 60.
* any thread which is started by a 10th kyu who is older than 60.
* anyone asking advice about commiting a crime, misdemeaner or felony.
* someone who starts a thread but never responds to it.
* good threads that somehow get deleted.
* horrible threads which never get deleted.
* threads that are nothing more than rants.