[Plugin: Breadcrumb NavXT] Google Microdata Help

Hi,
This is probably outside normal support but any input would be appreciated. I am using the plugin on our site and its been installed for about 2-3 weeks. We aren’t seeing the microdata show up in Google search results, could someone let me know if we’re doing something wrong? An example of a page with the plugin in use would be: http://www.lowcards.com/CreditCard/low-interest-credit-cards

The coding for the breadcrumbs is as follows:

<div class="breadcrumbs">
    <!-- Breadcrumb NavXT 4.1.0 -->
<div class="bcrump" itemscope itemtype="http://data-vocabulary.org/Breadcrumb"><a href="http://www.lowcards.com" itemprop="url"><span itemprop="title">Home</span></a> › </div><div class="bcrump" itemscope itemtype="http://data-vocabulary.org/Breadcrumb"><a href="" itemprop="url"><span itemprop="title">Low Interest Credit Cards</span></a></div></div><div class="clear"></div>

Thank you in advance!

http://ww.wp.xz.cn/extend/plugins/breadcrumb-navxt/