link rel='canonical'           href=facebook_meta_url
/ meta property='og:title'       content=facebook_meta_title
meta property='og:type'        content='website'
meta property='og:url'         content=facebook_meta_url
meta property='og:image'       content=facebook_meta_image
meta property='og:site_name'   content=facebook_site_name
meta property='fb:app_id'      content=facebook_meta_app_id
/ meta property='og:description' content=facebook_meta_description
/ meta name='Description'        content=facebook_meta_description

meta property='twitter:card'        content='summary'
meta property='twitter:site'        content='@abf_io'
meta property='twitter:image'       content=facebook_meta_image
meta property='twitter:url'         content=facebook_meta_url