DoFollow allows bloggers to reward their commenters by providing them with a backlink that is recognized by search engines to their site.  Combining this with KeyWordLuv allows a commenter to get a targeted keyword backlink which provides SEO value.

Bloggers put on these two plugins to encourage commenting and reward their loyal readers and followers, but they are heavily abused by marketers and spam bots which are trying to find and scavenge a quick backlink.  They are also abused by individuals hired to scavenge backlinks for companies or people who just do it for themselves.

This is where DoFollow restriction plugins come into play.

One such plugin is the NoFollow Free  This plug-in allows you to provide DoFollow links to your loyal blog commenters but prevents you from providing that same benefit to spammers and everyone who comments (like the DoFollow WordPress plugin does).

Read more about Control Your DoFollow Blog Comments

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