How to make your Wordpress Blog a DO-FOLLOW
Jul 29th, 2008 by Ronnie
If you have installed wordpress freshly on your blog then it is a No-Follow from the start.
If you want people who comment on your blog to get indexed then there are two ways to make your blog into a Do-Follow Blog.
1) Upgrading with a Plugin
Download dofollow.php.txt, Rename it to dofollow.php from dofollow.php.txt, Upload it in your wp-contents/plugins directory and then login to your wp-admin and go to plugin settings page and enable this plugin 
2) Upgrading Manually
Upgrading manually is risky, I am not responsible if there is any harm caused to your blog. Make a backup of your blog and try this.
In “wp-includes/comment-template.php” search for the line
$return = “<a href=’$url’ rel=’external nofollow’>$author</a>”;
and replace it with this:
$return = “<a href=’$url’ rel=’external’>$author</a>”;Done, Your blogs a Do-Follow now, Even my Blog is a Do-Follow, So keep commenting
Thanks, Apoorv
Ahh the infamous dofollow. Just remember that if you allow dofollow on your blog you are open to SPAM comments from auto dofollow blog finders.
We are using Akismet to get rid of spam comments, Even others should use that plugin, it is very helpful
Pretty much. If your going to have a doallow blog make sure you have a spam plugin installed or be prepared to manually delete comments for hours on end.