anchor.diff:    <meta property="fb:app_id" content="26558815027"> 
     <% unless @taxon.wikipedia_summary.blank? -%>
       <meta name="description" content="<%= strip_tags(@taxon.wikipedia_summary).gsub('"', "'") %>"/>
  -    <meta property="og:description" content="<%= html_attributize @taxon.wikipedia_summary %>"/>
  +    <%-
  +      og_description = if @photos.blank?
  +        html_attributize(@taxon.wikipedia_summary)
  +      else
  +        "#{html_attributize @taxon.wikipedia_summary} (Photo: #{@photos.first.attribution})"
  +      end
  +    -%>
  +    <meta property="og:description" content="<%= og_description %>"/>
     <% end -%>
   <%- end -%>
   
  
positive.code: <%- content_for(:extrahead) do -%>
    <meta property="og:title" content="<%= @taxon.to_plain_s(:verb => true, :no_time => true) %>"/> 
    <meta property="og:type" content="taxon"/> 
    <% if !@taxon.photos.blank? -%>
      <meta property="og:image" content="<%= @taxon.photos.first.small_url %>"/> 
    <% elsif @taxon.photos.blank? %>
      <meta property="og:image" content="<%= iconic_taxon_image_url(@taxon) %>"/> 
    <% end -%>
    <meta property="og:url" content="<%= taxon_url(@taxon) %>"/> 
    <meta property="og:site_name" content="iNaturalist"/> 
  
negative.code:       </a>
      </div>
  
    <div id="fblike" class="stacked">
      <script src="http://connect.facebook.net/en_US/all.js#xfbml=1"></script><fb:like show_faces="true" width="270"></fb:like>
    </div>
  
  </div>
  
  