What is the nature of the forum? Is the quality post the most important? In my opinion, if a forum is full of quality posts, then it becomes a scientific journal. The forum I like is an easy discussion environment.
It is okay to post even not quality post but relates to the topic and high number characters of posts doesn't mean that post are quality post this forum needs an senseful replies not replies that doesn't have a sense, Maybe campaign managers putting a rules that you need to post a high characters replies on every threads to avoid spamming and you need to make an effort and mind for every posts, Bitcointalk moderators deleting posts only that not regards to the topic of the thread.