also I notice that you use addThis sharbar, I haven't tried this but this may work also. (You'll still need to use my meta_tags.php code.)

I am not positive if addThis supports the description code I have for pinit but worth a try. If you try it. Let me know how it works. Just wrote it up. =)

change your add this code to:

Code:
<div class="addthis_toolbox addthis_default_style ">
<a class="addthis_button_preferred_1"></a>
<a class="addthis_button_twitter"></a>
<a class="addthis_button_email"></a>
<a class="addthis_button_compact"></a>
<a class="addthis_counter addthis_bubble_style"></a>
<a class="addthis_button_pinterest"
pi:pinit:url="<?php echo zen_href_link(FILENAME_PRODUCT_INFO); ?>"
pi:pinit:media="<?php echo HTTP_SERVER . DIR_WS_CATALOG . $products_image_medium; ?>"
pi:pinit:description="<?php echo HTTP_SERVER . DIR_WS_CATALOG . $products_image_medium; ?>&description=<?php echo stripslashes($products_description); ?>"
pi:pinit:layout="horizontal">
</a> 
</div>