added popular exploration, added order:rank

app/presenters/post_set_presenters/pool.rb

@@ -1,12 +1,13 @@
 module PostSetPresenters
-  class Pool
-    attr_reader :tag_set_presenter, :pool_set
+  class Pool < Base
+    attr_reader :tag_set_presenter, :post_set
+    delegate :posts, :to => :post_set
 
-    def initialize(pool_set)
-      @pool_set = pool_set
+    def initialize(post_set)
+      @post_set = post_set
       @tag_set_presenter = TagSetPresenter.new(
         RelatedTagCalculator.calculate_from_sample_to_array(
-          pool_set.tag_string
+          post_set.tag_string
         ).map {|x| x[0]}
       )
     end
@@ -14,19 +15,5 @@ module PostSetPresenters
     def tag_list_html(template)
       tag_set_presenter.tag_list_html(template)
     end
-
-    def post_previews_html(template)
-      html = ""
-
-      if pool_set.posts.empty?
-        return template.render(:partial => "post_sets/blank")
-      end
-
-      pool_set.posts.each do |post|
-        html << PostPresenter.preview(post)
-      end
-
-      html.html_safe
-    end
   end
 end