If anyone is using an SEO mod such as Ceon URI's and the URL string with $canonicalLink is not working, use this bit of code instead of the normal og:url:
Code:
<meta property="og:url" content="<?php echo (($request_type == 'SSL') ? HTTPS_SERVER . DIR_WS_HTTPS_CATALOG : HTTP_SERVER) . $request_uri; ?>" />
So the full bit of code im using on 1.3.9h with Ceon URI's is:
Code:
<meta property="og:title" content="<?php echo META_TAG_FBTITLE; ?>" />
<meta property="og:site_name" content="<?php echo TITLE; ?>" />
<meta property="og:image" content="<?php echo META_TAG_FBIMG; ?>" />
<meta property="og:url" content="<?php echo (($request_type == 'SSL') ? HTTPS_SERVER . DIR_WS_HTTPS_CATALOG : HTTP_SERVER) . $request_uri; ?>" />
<meta property="fb:app_id" content="APP ID" />
<meta property="og:type" content="product" />