Qui torvi la specifica dei feed: http://www.google.com/support/mercha...swer=188494#IT

Comunque:
codice:
<?xml version="1.0" encoding="UTF-8" ?>

<rss version ="2.0" xmlns:g="http://base.google.com/ns/1.0">
	<channel>
		<title>xx</title>
		<description>xxx</description>
		<link>http://www.dominio.com/</link>

		<item>
			<g:id>XXX</g:id>
			<title>XXX</title>
			<description>XX</description>
			<g:google_product_category>XXX</g:google_product_category>
			<g:product_type>XX</g:product_type>
			<link>XX</link>
			<g:image_link>XX</g:image_link>
			<g:condition>new</g:condition>
			<g:availability>in stock</g:availability>
			<g:price></g:price>
		</item>

	</channel>
</rss>