I think the biggest problem is one of information organization, not "trying to bump post count". There has already been a bit of joking about the fact that the forum has a very short memory.
The reason that there are so many topics and posts is mainly duplication. The thing that the new people generally do is rush to the "Create topic" button to ask one of the 10 most common questions. So make a FAQ (I know there is one on the wiki, that one can be used/extended).
In this case they should be pointed at a FAQ or duplicate topic as quickly as possible. Prevent the thread from becoming a lengthy political argument (especially if it was a technical question in the first place), and simply close it if it does.
Everyone can help with this (except for the closing) not just moderators. The key here is speed. Don't assume people are malignant, they are simply ignorant of everything that went before.
+10, if I only had more time I would spend so much of it on the wiki...
I think much of the clueless questions/rants can be eliminated with good information on the wiki, linked to in eye-catching stickies in the forum.
Good point. I would support not allowing people to post new topics until they have 100 posts or so.
Not everyone are in the forum for endless chatter, some just research Bitcoin on their own and have as their first post here a good question, a useful suggestion or an interesting project they've been working on.
More prudent would be a manual vetting system where established users can bestow to newbies posting rights if they see they're making good posts.