This plugin allows you to add facebook open graph protocol to your blog
You can add facebook meta data (open graph protocol) to any post/page/content type, edit it and enjoy your blog sharing. WP Open Graph automaticly extract data from post title, excerpt, "All In One Seo Pack" or "WordPress Seo by Yoast" plugins. It use post thumbnails(featured image) or presetted default image as og:image.
Also you can edit this data for any post, static home page and index blog page. Plugin automatically adds data for any taxonomy archives(tags, categories, custom taxonomies) from term title and description.