By default, the Compojoom component – formerly known as Joomla! Comment – is not "nofollow free". Fortunately, there is a very simple hack that can be done in order to make it "nofollow free". Please note that this hack applies to version 4 of the component as the previous version has a different file structure.

This being said, this is how to do it (it’s really simple!):

1. Download the file:
   • site_root/components/com_comment/classes/joomlacomment/JOSC_post.php
2. Search for the "nofollow" sting in the file. Depending on the version you are using, it might be on line 317 (version 4.1.3), 541 (version 4.1.4) or elsewhere.
3. Once the "nofollow" string is found in a place like:
   • <a class=’postwebsite’ rel=’external nofollow’ href=’".$website."’ …
4. Delete the word "nofollow", resulting something like:
   • <a class=’postwebsite’ rel=’external’ href=’".$website."’ …
5. Upload the file back to the server.
6. Clean the cache, if you have enabled it.

That’s all. I hope it helps.