The search box is always blank - maybe there should be some initial text, such as "Enter you search terms here" or "Search The AnswerBank", that gets cleared as soon as one clicks on it, same as the question box shows "Enter Your Question Here" which gets cleared when one clicks on that box.
It might make the search capability more obvious to those new to the site - or might make no difference at all to the number of questions that duplicate what has already been asked.
Maybe the text should be more direct e.g. "Has your question been asked before? Click here." (that fits in the current box), and to make it more noticeable it could be in a different colour, e.g. blue.