打开/wordpress/wp-admin/includes/目录下meta-boxes.php文件，找到<label for="contact">一行，在上面一行添加如下语句即可
<label for="nofollow">
<input class="valinp" type="radio" name="friendship" value="nofollow" id="nofollow" <?php xfn_check('friendship', 'nofollow'); ?> /> <?php /* translators: xfn: http://gmpg.org/xfn/ */ _e('nofollow') ?>
</label>
<label for="nofollow">
<input class="valinp" type="radio" name="friendship" value="nofollow" id="nofollow" <?php xfn_check('friendship', 'nofollow'); ?> /> <?php /* translators: xfn: http://gmpg.org/xfn/ */ _e('nofollow') ?>
</label>
试试看，能不能用