One more idea about the problem with too much same theme or useless posts... It would be great to make Topic Starting Merit needed (sorry for my English). I mean if you want to start topic - you need to pay merit for it 
Nice try but this is not a good idea because newbies and jr members won't have the ability to start their own thread plus the activity here in the forum might decrease if it happens because not everyone here starts useless threads. Imo it'll do more harm than good for the forum and there's no need for this because we already have the report button for that if it's really getting out of hand.