anchor.diff:  
         <ul class="sponsors">
           <li id="wooga">
  -          <% link_to 'http://www.wooga.com', :target => '_blank' do %>
  +          <% link_to 'http://www.wooga.com?utm_source=euruko&utm_medium=banner&utm_campaign=aphrodite', :target => '_blank' do %>
               <%= image_tag "sponsors/wooga_150x75.png", alt: "Wooga sponsor Logo", title: "Wooga", itemprop: "image", width: "150", height: "75" %>
             <% end %>
           </li>
  
positive.code: 
        <ul class="sponsors">
          <li id="avarteq">
            <% link_to 'http://www.avarteq.de', :target => '_blank' do %>
              <%= image_tag "sponsors/avarteq_200x100.png", alt: "Avarteq Logo", title: "Avarteq", itemprop: "image", width: "200", height: "100" %>
            <% end %>
          </li>
  
          <li id="soundcloud">
            <% link_to 'https://soundcloud.com', :target => '_blank' do %>
              <%= image_tag "sponsors/soundcloud_200x100.png", alt: "SoundCloud Logo", title: "SouldCloud", itemprop: "image", width: "200", height: "100" %>
            <% end %>
          </li>
  
          <!--
          <li id="heroku">
            <% link_to 'http://www.heroku.com', :target => '_blank' do %>
              <%= image_tag "sponsors/heroku_200x100.png", alt: "Heroku Logo", title: "Heroku", itemprop: "image", width: "200", height: "100" %>
            <% end %>
          </li>
  
negative.code: 
        <ul class="sponsors">
          <li>
            <% link_to 'http://www.skroutz.gr?utm_source=euruko&utm_medium=banner&utm_campaign=gaia', target: "_blank" do %>
              <%= image_tag "sponsors/skroutz_logo_400x300.png", alt: "Skroutz S.A. Logo", title: "Skroutz S.A.", itemprop: "image", width: "400", height: "300" %>
            <% end %>
  
  