oh ye, we have an atom feed, too :)

app/views/blogposts/index.atom.builder

@@ -0,0 +1,17 @@
+atom_feed do |feed|
+  feed.title "Redstoner News"
+  feed.updated Time.now
+
+  @posts.each do |post|
+    feed.entry post do |entry|
+      entry.updated post.updated_at
+      entry.author do |a|
+        a.name post.author.name
+        a.uri user_url(post.author)
+      end
+      entry.url blogpost_url(post)
+      entry.title post.title
+      entry.content Sanitize.clean(GitHub::Markdown.render_gfm(post.content), Sanitize::Config::RELAXED).html_safe, :type => 'html'
+    end
+  end
+end