Just as you should think twice before making every post, you must search before creating every topic. If we all do this work then the number of many repetative posts will decrease. And this habit will help keep the forum clean.
Yeah,and as much as we are checking our posts,we must also try to avoid posts that are not inline with the topic sentence.Some persons give posts that do not have anything to do with the topics,they just post what's in their mind,without reading through people's posts,and know if the one you are making is inline with the one that people have made before or not.
And again,while making a topic,let's try to have a check- through on the topics that have been made,wether it is not the same thing with the ones made before,as he said to avoid repeating a particular topic.