anchor.diff:  
   New Discussions:
   ----------------
  -<% if @digest.discussions.count -%>
  -<% @digest.discussions.each do |discussion| -%>
  +<% if @discussions.count -%>
  +<% @discussions.each do |discussion| -%>
   <%= discussion.title %>
   <% end -%>
   <% else -%>
  
positive.code: 
  New Libraries:
  ----------------
  <% if @digest.libraries.count -%>
  <% @digest.libraries.each do |library| -%>
  <%= library.name %>
  <% end -%>
  <% else -%>
  No new libraries.
  <% end -%>
  
  New Users: <%= @digest.users_count %>
  ----------------
  
negative.code: 
  New Tutorials:
  ----------------
  <% if @tutorials.count -%>
  <% @tutorials.each do |tutorial| -%>
  <%= tutorial.title %>
  <% end -%>
  <% else -%>
  