Here’s the first plugin for WordPress (works with 1.2.2) that applies a filter to your comments and will insert the rel=”nofollow” attribute into any link a commenter leaves on your website.

I prefer to stick with the protection I’ve put into place to block comment and trackback spam instead of blocking SE’s from spidering the links of those that comment on my blogs. Not only does the rel=”nofollow” attribute keep spammers from benefiting from their links but also legitimate participants do not get credit for their inbound links.

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