I am also using your facebook share plugin and it does a great job. Thanks for the plugin.
However a couple of issues noticed. Since the og:type was hardcoded as product, and I using woocommerce along with a regular blog, now articles also appear as 'products' on facebook.
Is it possible to have a code where the open graph type is set as 'website' for homepage, 'articles' for regular pages and post, and 'products' only on woocommerce pages ? I think that would make the plugin perfect.