Forums are a bit of a mess, it's getting difficult to search for stuff due partly to the amount of posts, trolling and repetition which itself is a symptom of peops not being able/inclined to search through the mounds of crap to see whether what they are spouting is or is not original.
As deleting/locking stuff that lies in the grey area of relevance agravates people, suggest that a function is added allowing the originator of a thread and forum mods to designate posts as either particularly good and pertinent to a topic or vice versa with forum mods being able to do the same to threads and then a filter function allowing the user to filter between the three categories.