This is a simple, tiny plugin to produce og:tags. Just that and only that. No configuration, pure power.

If post contain YouTube links, this plugin save as postmeta video thumbnail link and add it to og:image as post thumbnail.

The Facebook Open Graph Tags that this plugin inserts are:

for all type of content

• og:locale - site locale
• og:site_name - blog title
• og:title - post/page/archive/tag/... title
• og:url - the post/page permalink
• og:type - "website" for the homepage, "article" for single content and blog for all others
• og:description - site description

for single content

• og:image: From a specific custom field of the post/page, or if not set from the post/page featured/thumbnail image, or if it doesn't exist from the first image in the post content, or if it doesn't exist from the first image on the post media gallery, or if it doesn't exist from the default image defined on the options menu. The same image chosen here will be used and enclosure/media:content on the RSS feed.
• article:author - author of post link
• article:published_time - date of first article publication
• article:modified_time - date of last article modification
• article:tag - tags used in post