Sometimes giving the wrong info can be more harmful than giving no info at all.
I think a certain level of independent research should be done before posting a question, even if it is in the noob section. Most people here would benefit more if they read a couple grow bibles on their own. I also have purple stems and now fan leaves, I looked up the problem and found many, many different websites explaining these issues.
Like I said it just clutters up the forums, pushes better more helpful information lower down the list.