My pet hate is people spouting overly technical explanations on forums for amateurs (this is common occurence on a few editing boards). I don't think I've ever seen it here, and long may it continue!
It confuses beginners and makes the subject seem incomprehensible. Formula One drivers couldn't assemble an engine, so why do editors need to know the ins and outs of a camcorder? I understand that insight educates, but there's a level of knowledge beyond the scope required.
If anyone ever starts tearing their hair out because they don't understand what someone's written about video editing... start reading another article or site. Video editing should be about getting creative, not technical! Sharing videos that other people find entertaining, not discussing the relative merits of [insert name of technical bullshit].