WordPress Blog SEO target 'blank' plugin opening post|comment links in new tab|window

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WordPress Blog SEO Plugin Opening Post & Comment (External) Links In New Window/Tab

For related SEO plugin, see Nofollow Reciprocity.

This plug-in opens links in blog posts and comments in new tab/window, therefore keeping your visitors on your blog. Without this plugin, when visitors click on external link, they are navigated away from your site, and may never come back to check other nice posts you have wrote. Note that 'external' in title is in parentheses, as it is just an assumption that links in comments will be external. If they point to pages within same blog, they are still opened in new tabs.

Excuse my ignorance if similar plugin already exists, I looked for it and couldn't find it. There is one that puts blanks in comment links, but not post links. This one does both.
UPDATE: I just found (better) one (Identify External Links); you need to set appropriate variable to 'true'.

Copy (CTRL+C) code below and save it into file named 'target-blank-in-posts.php'

<?php

/*
Plugin Name: Target Blank In Posts And Comments
Plugin URI: http://www.inverudio.com/programs/WordPressBlog/NewTabWindowTargetBlankPlugin.php
Description: Keep your visitors. Inserts target="_blank" into post and comment content URLs and external links will open in new tabs. Lazar blatantly stole the code from Kaf Oseo's 'Nofollow In Posts' plugin, and replaced rel="nofollow" with target="_blank".
Version: R1.0.1
Author: Lazar Kovacevic
Author URI: http://www.inverudio.com

	Copyright (c) 2006 Kaf Oseo (http://szub.net)
	Target Blank In Posts URLs is released under the GNU General Public
	License (GPL) http://www.gnu.org/licenses/gpl.txt

	This is a WordPress plugin (http://wordpress.org).

Props to kubicka and Kaf.
*/

function target_blank_in_posts($text) {
		$text = preg_replace('%<a(\s+.*?href=\S(?!' . get_bloginfo('home') . '))%i', '<a target="_blank"\\1', $text);

	return $text;
}

//put blanks in post links
add_filter('the_content', 'target_blank_in_posts', 42);
//put blanks in comments links
add_filter('comment_text', 'target_blank_in_posts', 42);

?>

Copy that file into WordPress plugins folder, activate plugin, and watch blog statistics.

Alternatively, you can download target-blank-in-posts.zip and unzip it into plugins folder, activate it, and blah blah statistics blah.

Remember to delete WP-Cache if you have that plugin. Otherwise, you may not see effect of this plugin immediately.

If you want to add this tags in comment author's url's whose link point to above sites, add at the end of above code: add_filter('get_comment_author_link', 'wp_nofollow_reciprocity', 999);

If you write your email in the message, I'll let you know about modified file.

WordPress Blog SEO Plugin Opening Post & Comment (External) Links In New Window/Tab

Comments, questions, suggestions ?