I have a product page in a Magento store and I'm trying to implement Rich snippets with Microformats in this page.
I followed this guide : http://yoast.com/rich-snippets-magento/, but when I try the Rich Snippets Testing Tool on this page : http://wfltp.zone1global.com/bulb/3m/new_compactview_sx30_basic.html I get
"The following errors were found during preview generation: Empty page. This page does not contain authorship or rich snippet markup."
What am I doing wrong?
At first guess, you are not modifying the right template files. Have you tried viewing the source of your pages to see if the tags are actually in there?
If your tags are in there, you are not doing something right. Use the Google Rich Snippets Testing Tool for your testing (after all it is primarily Google that is going to be using these snippets). http://www.google.com/webmasters/tools/richsnippets