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zem_prblock is a Textpattern plugin that reduces the incentive for comment spam by blocking PageRank on outgoing links. It also allows attributes such as class and target to be selectively applied to links to external web sites.
Comment spam is usually motivated by web site owners trying to improve their ranking in Google search results. They do this by including links to their web site in comments submitted to many different blogs. Google interprets these links as meaning that the spammer’s web site is very popular.
zem_prblock works by ensuring that Google ignores links to external web sites. It offers two different methods: javascript redirection, and the rumoured-soon-to-be-announced rel=nofollow technique. The plugin only alterss links within a predefined block, and skips local, relative and ‘mailto:’ links.
Download and documentation: link.
This was initially a software ransom, but it’s already paid in full, so it’s available for download now.
Alex
tstate
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I’m sure it works great (like all your plugins do), but – if someone prefers hacks – rel="nofollow" can be easy added to the visitor’s url by changing line 102 in publish/comment.php file to
$name = '<a href="http://'.$web.'" title="'.$web.'" rel="nofollow">'.$name.'</a>';
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You know… every time I sit down to implement some feature I want, you go and release a plug-in that does it.
You cooin’ with my bird?
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