The plugin currently provides helper methods for hAtom, basic hCard, and the datetime design pattern.

1. Start here, it’s a great introduction to microformats. Or head over to microformats.org.

2. Install the microformats helper plugin:

   ./script/plugin install http://labnotes.org/svn/public/ruby/railsplugins/microformathelper

3. Include the helper in your controller:

   helper :microformat

4. Try it out with an hAtom feed:

   <% render_hfeed do
      posts.each do |post|
       render_hentry "post-#{post.id}" do %>
         <%= hentry_title post.title %>
         <%= hentry_content post.content %>
         Published on <%= post.created_on.microformat :published     %> by
           <%= hcard :fn=>post.author, :url=>post.author_url, :class=>"author" %><%
       end
     end
   end %>