Patrick R. Michaud
pmichaud at pobox.com
Sun Sep 10 13:52:12 CDT 2006
On Sun, Sep 10, 2006 at 01:22:01PM -0400, Henrik Bechmann wrote:
> What's rel='nofollow'? A searchbot directive?
Yes. A rel='nofollow' attribute of a link tells a search engine
spider not to give that link any weight when computing search engine
rankings. The purpose of rel='nofollow' is to prevent spammers from
obtaining any benefit from abusing public sites by posting lots of links.
One of the original (and best) pages on the topic is at
Note that despite the name, the convention does not say that a
link with rel='nofollow' is not to be followed. It just says the
link should not be given any weight. Originally Google and others
still followed links that contained rel='nofollow', they just didn't
give the links any weight. However, since the convention was first
published Google has since said that its spiders will not follow links
that have rel='nofollow'.
>What's the logic of when it is added?
PmWiki adds the rel='nofollow' whenever there's an external link of
>How do I change it?
Change the value of $UrlLinkFmt . By default $UrlLinkFmt is
"<a class='urllink' href='\$LinkUrl' rel='nofollow'>\$LinkText</a>";
To eliminate the rel='nofollow', add the following to local/config.php:
"<a class='urllink' href='\$LinkUrl'>\$LinkText</a>";
> (I have a lot of links to html pages
> using intermap which are actually internal to the website and which I DO
> want crawled.)
It's also possible to change the output format for individual InterMap
"<a class='pmwikilink' href='\$LinkUrl'>\$LinkText</a>";
would set the formatting of PmWiki: InterMap links. If an InterMap
link doesn't have a custom format set, it uses $UrlLinkFmt.
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