Are you using Disqus comment plugin for WordPress? The plugin generates a followed link Titled “blog comments powered by DISQUS”. If you want to nofollow the link follow the tutorial below
Find the file default-widgets.php in wp-includes folder of WordPress Installation. Keep a backup of the original file incase you make mistake. Find the following lines of code under Recent_Posts widget class
I have recently found lot of trackback spam in one of my WordPress installation. Here is an article which will help you to remove trackback spam from SERP (Search engine Result Page).
Myspace.com has recently taken link redirection approach to track down link spamming in their Social space. You will notice links in profile and comments posted in Myspace are converted automatically to http://www.msplinks.com/ . Example: http://www.msplinks.com/MDFodHRwOi8vd3d3LmFsbGdlZWtzLmluZm8v When first introduced there were some misconceptions came up about this automatic link conversion which spread like wild fire throughout …