Hello. First of all, congratulations for this very nice plugin and for the effort invested in developing it. That is to be appreciated.
I've installed the last version available and there is a problem: I'm not getting meta description (or og:description), but the first 160 chars from the post. The code in on line 134, wp-facebook-ogp.php.
I also use WordPress SEO Plugin by Yoast and, there for, the meta name="description" is where it should be and has all wright content.
Any ideas ? Thank you.