http://wpmudevorg.wordpress.com/project/List-All-%5Bwidgets%5D
these plugins where showing blogs marked as spam as well, so I edited list-all.php and changed this line: ´ last_updated FROM " . $wpdb->blogs. " WHERE public = '1' AND spam = '0'" . $order .´ I included the ´ AND spam = '0'´ part.
Also if using donncha's sitewide tags plugin, I would not want thatblog to show up here as most active, last updated, etc, so I will fitler it out as well.