If you quickly check he profile of posters you will be able to see how long they have been on curezone and the quality of their posts. You will then be able to contribute in a more targeted way to the discussion and avoid "telling your grandmother how to suck eggs"!
To teach one's grandmother to suck eggs is an old saying that means; To offer needless assistance; to waste one's efforts upon futile matters; especially, to offer advice to an expert.