For victims of revenge porn - you can set up a Google alert on your name, etc if the photo(s), personal information and more so that you are notified when it has made its way onto another website.
Google Alert: https://www.google.com/alerts
Make sure to preserve evidence by taking screenshots, printing out the webpage(s) and I'd even gone as far as taking photos in the search engines to prove how high these types of links show up.
Report the nude photo(s) or video to the website, report to authorities, speak to a lawyer who is knowledgeable about revenge porn to find out ways to fight back and above most - please take care of yourself.
More quick links:
http://www.bustle.com/articles/121328-8-ways-to-fight-back-against-revenge-porn-because-it-can-happen-to-anyone
http://www.lafasa.org/main/revenge_porn
