I've been seeing quite a lot of "guide" and "summary" threads recently that this could be applied to. Not quite the same "maliciously dishonest" threads that gmaxwell is referring to, but just as incorrect. The users obviously have absolutely no idea what they are writing about, but create these threads for the sole reason (I suspect) as they see making such threads as being a potential way to farm merit. I don't know if there has been a genuine increase in the these kinds of threads recently, or if I've just been noticing them more, but they are frustrating to see nonetheless, and newbies who don't know any better are reading and replying to the nonsense and believing it to be true. A couple of the most recent examples:
https://bitcointalk.org/index.php?topic=5246484.0https://bitcointalk.org/index.php?topic=5241509.0Being able to put a warning at the top of those threads saying "This post is complete nonsense" would not necessarily be a bad thing. Having said that, given how petty some of the endless squabbles on the reputation board are, even among some of the most senior members on the forum, there is absolutely zero chance that such a feature wouldn't be misused.
Thankfully, there are often sensible members around to debunk any such nonsense (as is the case in the two threads linked above).