Change the way the orig_url is passed to fb

app/controllers/application_controller.rb

@@ -110,7 +110,7 @@ class ApplicationController < ActionController::Base
   def render_share
     object_class = params[:model].classify.constantize
     @object = object_class.find(params[:id])
-    @orig_url = params[:orig_url]
+    @orig_url = "http://#{params[:orig_host]}/#{params[:orig_path]}"
     render 'shared/render_share', :layout => false
   end