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This is a terribly simple but useful WordPress plugin that puts an interactive counter-style Reddit interface on your blog — but only when someone has already bookmarked the URL.  It looks rather lame when everything isn't bookmarked, but the JavaScript interface with the arrows is a definate enhancement over a simple icon.  So why not show it only when applicable?  I'll narcissistically bookmark this post to demonstrate.  Just call the function "reddit_this()" and specify one of the styles enumerated here.  Enjoy!

<?

/*
Plugin Name: Reddit
Plugin URI: http://www.seoegghead.com/
Description: Creates an interactive Reddit button.
Author: Jaimie Sirovich
Version: 1.0
Author URI: http://www.seoegghead.com/
*/ 

function reddit_this($reddit_style = 1)
{
    global $id;
    $reddit_link = get_post_meta($id, 'REDDIT_CLASS_reddit_link', true);
    
    if (!is_home() && !$reddit_link && preg_match('#reddit.com#i', $_SERVER['HTTP_REFERER'])) { 
        add_post_meta($id, 'REDDIT_CLASS_reddit_link', $_SERVER['HTTP_REFERER']);
        $reddit_link = $_SERVER['HTTP_REFERER'];
    }

    if ($reddit_link) {
        ?><script>reddit_url='<?php the_permalink() ?>'</script><script language="javascript" src="http://reddit.com/button.js?t=<?=$reddit_style?>"></script><?
    }
    
}

?>