disable a network enabled plugin for just one or more subsite(s)

disablepluginpersite.php

<?php
/*
	This simple snippet willy disable plugin per site basis.
	Replace 2,3,4 with acutal website ID(s) for those you want to disable this plugin
	This snippet can also be used to disable any network activated plugin. Only thing you have to do is copy the folder and file name of plugin e.g akismet/akismet.php
*/
add_filter('site_option_active_sitewide_plugins', 'wpmu_modify_sitewide_plugins');

function wpmu_modify_sitewide_plugins($value) {
    global $current_blog;

    if( in_array( $current_blog->blog_id, array(2,3,4) ) ) {
        unset($value['easyblogging/easyblogging.php']);
    }

    return $value;
}

Thanks sorich87 from http://wordpress.stackexchange.com/users/473/sorich87

I modified it a bit for multiple sites:
http://wordpress.stackexchange.com/questions/3426/how-to-disable-a-network-enabled-plugin-for-just-one-site