Also, another problem is that if you go straight to yoursite.com/searchKeyword.php, any person can search the entire site by just clicking in the search box and pressing enter without typing anything. I don't think it can be stopped. "/searchKeyword.php"
Sure it can. That is where your robots.txt file comes in. You have to not allow search engines to index certain areas of your site. If you need help or examples, let me know.
