So I have a website with URL's like this: http://www.domain.com/profile.php?id=151 I've now cleaned them up with mod_rewrite into this: http://www.domain.com/profile/firstname-lastname/151 I've fetched and re-indexed my website after the change. What is the best way to make the old dirty ones disappear from search results and keep the clean ones? Is blocking profile.php with robots.txt enough?