Then I found out that Google and other search engines may lower your PageRank if they find out you link to other sites in a way to boost page rank which could negatively affect your ranking in search results. So I decided that some links that show on my pages (e.g. BlogRoll links) should have a rel=”nofollow” attribute.

I looked around and found this blog entry which led me to the correct template file but suggests changing

$output .= '<a href="' . $the_link . '"' . $rel . $title . $target. '>';
to
$output .= '<a href="' . $the_link . '"' . $rel . $title . $target. ' rel="nofollow">';

This seems a bit hack-ish and not so elegant since he doesn’t append rel=”nofollow” to the $rel variable. His $rel variable should be set up like this:

$rel = $bookmark->link_rel;
if ( '' != $rel ){
$rel = ' rel="' . $rel . ' nofollow"';
}else{
$rel = 'rel="nofollow"';
}

Anyways, I looked some more and found this blog entry which suggests editing the template responsible for editing the blogroll links. This method adds another checkbox called “nofollow” to the list of other valid values for the rel attribute. This is the preferred approach since it allows me to be more selective about which links have “nofollow” and which do not.

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