anchor.diff:  meta( name='twitter:description' content= article.get('social_description') ? article.get('social_description') : article.get('description'))
   meta( name='og:description' content= article.get('social_description') ? article.get('social_description') : article.get('description'))
   //- Social Title
  -meta( name='twitter:description' content= article.get('social_description') ? article.get('social_description') : article.get('description'))
  -meta( name='og:description' content= article.get('social_description') ? article.get('social_description') : article.get('description'))
  +meta( name='twitter:title' content= article.get('social_title') ? article.get('social_title') : article.get('thumbnail_title'))
  +meta( name='og:title' content= article.get('social_title') ? article.get('social_title') : article.get('thumbnail_title'))
   
   //- Keywords
   if article.get('keywords') && article.get('keywords').length
  
positive.code: title= article.get('search_title') ? article.get('search_title') : article.get('thumbnail_title')
  meta( property="og:title", content=article.get('thumbnail_title') )
  link( rel="canonical", href=(sd.APP_URL + '/article/' + article.get('slug')) )
  meta( property="og:site_name" content='Artsy' )
  meta( property="og:url", content=(sd.APP_URL + '/article/' + article.get('slug')) )
  
negative.code: 
  //- Search Description
  meta( property='description', content= article.get('search_description') ? article.get('search_description') : article.get('description'))
  //- Social Image
  meta( property="og:image", content= article.get('social_image') ? article.get('social_image') : article.get('thumbnail_image') )
  meta( property="twitter:image" content= article.get('social_image') ? article.get('social_image') : article.get('thumbnail_image'))
  