CartThrob XML for Google Product Search

gistfile1.xml

<?xml version="1.0" encoding="UTF-8" ?>
<rss version="2.0"
    xmlns:g="http://base.google.com/ns/1.0">
<channel>
<title>{site_name} Products</title>
<link>{site_url}</link>
<description>[insert store description here]</description>
{exp:channel:entries channel="products" rdf="off" dynamic_start="on" limit="1000" disable="member_data|trackbacks"}
	<item>
		<title>{exp:xml_encode}{title}{/exp:xml_encode}</title>
		<link>{title_permalink=products/detail}</link>
		<description>{exp:xml_encode}{product_description}{/exp:xml_encode}</description>
		<g:image_link>{product_images limit="1"}{site_url}{product_image}{/product_images}</g:image_link>
		<g:price>{product_price}</g:price>
		<g:condition>new</g:condition>
		<g:id>{product_vw}</g:id>
		<g:brand>{exp:xml_encode}{product_brand}{/exp:xml_encode}</g:brand>
		<g:gtin>{product_upc}</g:gtin>
		<g:product_type>{categories limit="1" parent_only="yes"}{exp:xml_encode}{category_name}{/exp:xml_encode}{/categories}</g:product_type>
	</item>
{/exp:channel:entries}
</channel>
</rss>

Just a start--use your own custom fields and content to fill out. Set your template as XML type and submit it to google: http://www.google.com/intl/en/products/waystosubmit.html