anchor.diff:  
   <ul>
   <% current_user.links.each do |link| %>
  -  <li><%= like_to link.label, link.url %></li>
  +  <li><%= link_to link.label, link.url %></li>
   <% end %>
   </ul>
   
  
positive.code: 
  <ul>
  <% current_user.profiles.each do |profile| %>
    <li><%= like_to profile.label, profile.url %></li>
  <% end %>
  </ul>
  
  
negative.code: 
  <ul>
  <% current_user.contributions.each do |contribution| %>
    <li><%= link_to contribution.label, contribution.url %></li>
  <% end %>
  </ul>
  
  