Sometime people are answering very old threads. In my opinion this is, because the Search is set default with ordered by "relevance", instead of "most recent". I am only using the search with order by most recent. Why? On BHW (online marketing) all information is very time critical. And I think nobody see it different. So maybe you should set the default in the search to ordered by "most recent". I think a lot of posts on very old not relevant topics will not happen anymore. And also a lot of people will be happy to find always the new topics, when using the same keyword in search after a couple of days or weeks. Instead of the same old topics again and again.