Mejorando el RSS feed

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Rss20.aspx.cs" Inherits="Feeds_Rss20" %>

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Xml;
using System.Text;
using System.Data.SqlClient;
using System.Web.Configuration;

public partial class Feeds_Rss20 : System.Web.UI.Page
{
  protected void Page_Load(object sender, EventArgs e)
  {
    Response.ContentType = "text/xml";
    Response.ContentEncoding = Encoding.UTF8;   
    //si no esta en cache volver a crear el feed
    if (Cache["RssFeed"] == null)
    {
      StringWriter sw = new StringWriter();
      XmlTextWriter writer = new XmlTextWriter(sw);
      writer.Formatting = Formatting.Indented;
      //cabecera del archivo XML
      writer.WriteProcessingInstruction("xml",
        "version=\"1.0\" encoding=\"utf-8\"");
      //Aplicar un XSL stylesheet
      writer.WriteProcessingInstruction("xml-stylesheet",
        "type='text/xsl' href='http://www.jtsoft.org/xslt/rss.xsl' version='1.0'");
      writer.WriteComment("generator=\"jtsoft/2007\"");
      //El feed comienza con el elemento "rss"
      writer.WriteStartElement("rss");
      writer.WriteAttributeString("version", "2.0");
      writer.WriteAttributeString("xmlns:dc", "http://purl.org/dc/elements/1.1/");
      //Abrir un elemento "channel"
      writer.WriteStartElement("channel");
      writer.WriteElementString("title", "JTsoft.org, Blog sobre Asp.net");
      writer.WriteElementString("link", "http://www.jtsoft.org/");
      writer.WriteElementString("description","Descripcion del RSS feed...");
      writer.WriteElementString("generator", "http://www.jtsoft.org/");
      writer.WriteElementString("language", "es");
      writer.WriteElementString("ttl", "5");
      // obtener los articulos del blog mediante un SqlDataReader
      SqlDataReader reader;
      string connectionString =
        WebConfigurationManager.ConnectionStrings["myConn"].ConnectionString;
      SqlConnection myCon = new SqlConnection(connectionString);
      SqlCommand myCommand = new SqlCommand("Feed_select", myCon);
      myCommand.CommandType = CommandType.StoredProcedure;
      try
      {
        myCon.Open();
        reader = myCommand.ExecuteReader();
        while (reader.Read())
        {
          //para cada articulo se añade un elemento "item"
          writer.WriteStartElement("item");
          writer.WriteElementString("title", reader.GetString(0));
          writer.WriteElementString("link", reader.GetString(1));
          //no poner código HTML en la descripcion
          writer.WriteElementString("description", reader.GetString(2));
          writer.WriteElementString("dc:creator", reader.GetString(3));
          writer.WriteElementString("pubDate", reader.GetDateTime(4).ToString("r"));
          //insertar un elemento "category" por cada etiqueta
          string[] tags= GlobalData.Tags_select(reader.GetInt32(5)).Split(',');
          foreach (string tag in tags)
          {
            writer.WriteElementString("category", tag.Trim());
          }
          //comentarios
          writer.WriteElementString("comments", reader.GetString(1)+"#comentarios");
          //guid->RSS validate
          //writer.WriteStartElement("guid");
          writer.WriteStartElement("guid");
          writer.WriteAttributeString("isPermaLink", "false");
          writer.WriteString(reader.GetString(1));
          //writer.WriteElementString("isPermaLink", "true");
          //cerrar "guid"
          writer.WriteEndElement();
          //cerrar "item"
          writer.WriteEndElement();
        }
        reader.Close();
      }
      finally
      {
        myCon.Close();
      }
      //cerrar "channel"
      writer.WriteEndElement();
      //cerrar "rss"
      writer.WriteEndElement();
      //Guardar el Rss feed en cache
      Cache.Insert("RssFeed", sw.ToString(), null,
              DateTime.Now.AddMinutes(1), TimeSpan.Zero);
      writer.Close();
    }
    //la pagina muestra el Rss feed guardado en cache
    Response.Write(Cache["RssFeed"].ToString());
  }
}