I've added it in manually, it doesn't exist as a category item.
<!-- Block categories module -->
<div id="categories_block_left" class="block">
<h4>{l s='SHOP NOW' mod='blockcategories'}</h4>
<div class="block_content">
<ul class="tree {if $isDhtml}dhtml{/if}">
{foreach from=$blockCategTree.children item=child name=blockCategTree}
{if $smarty.foreach.blockCategTree.last}
{include file="$branche_tpl_path" node=$child last='true'}
{else}
{include file="$branche_tpl_path" node=$child}
{/if}
{/foreach}
<li><a href="http://www.rubycotton.com/content/27-ruby-in-the-news" title="Ruby in the news">RUBY IN THE NEWS</a></li>
</ul>
{* Javascript moved here to fix bug #PSCFI-151 *}
<script type="text/javascript">
// <![CDATA[
// we hide the tree only if JavaScript is activated
$('div#categories_block_left ul.dhtml').hide();
// ]]>
</script>
</div>
</div>
<!-- /Block categories module -->