Many blog about websites offering do follow and no follow back links, but in many cases the dofollow link might have been changed to nofollow one as time passed. So how can we find that if the links in comments section is dofollow or not? You may also like : How To Quickly Submit Sitemap To Google,Bing,Yahoo And Ask? For this all you have to do is to install an addon named NoDoFollow in Firefox,restarting the browser is required as its demanded by the plugin.Right click on the page that you want to have a look and check nodofollow option,it