Scan a website to find nofollow links to various other sites. The Nofollow Finder examines all outgoing links for the specified website and flags links that have the nofollow attribute. Enter your URL at http://www.tools.theseosoul.com/tools/no-follow-finder/ then this tool will help you find nofollow links on your site http://www.tools.theseosoul.com/tools/no-follow-finder/
If you use Firefox then add the following NoDoFollow tool on it and this will show you all links that are No and Do Follow on websites you visit. This is done with a simple color recognition and is easy to use.