<p>Enter the meta keywords that you want the homepage of your site to be
    optimized for.</p>

<p>This option will only work if you are using the default WordPress option and
    showing your most recent posts as your homepage.</p>

<p>If you have set a static page to be your homepage, then the meta keywords of
    that page will be the meta keywords of your homepage.</p>

<p>You can change this option on your
    <a href="<?php echo admin_url('options-reading.php'); ?>" target="_blank">reading settings</a>
    page.</p>