Google Merchant Center blog is offering to offer two suggestions to improve your Google Product Search experience:
- Include "rel=canonical" tags on your website. Many merchants have several identical product pages for each item. With the rel="canonical" tag, your webmaster can indicate which URL you'd like to include on Google.com. This tag is necessary for participation in Rich Snippets, and also allows you to provide clean, user-friendly URLs that don't include excess tracking or category navigation parameters.
- Update your technical contact in the Google Merchant Center. If you have ever wondered why your feed didn't process, then you should ensure that your contact information is up-to-date in the Google Merchant Center's Settings page.
"We'll send an email to this address if there are technical issues with your account, such as problems with the content you submitted. We may also send you helpful suggestions on topics like data quality," said Google.