If you want to move from Typo to Wordpress, you can use this to export the strange Wordpress RSS file format (comments and all).

Just add this to the XmlController :

   1  
   2    def wp
   3      @articles = Article.find( :all, :include => [:categories, :tags, :user, :blog])
   4    end

And then add this file (app/views/xml/wp.rxml):

   1  
   2  // insert code here..
   3  xml.instruct! :xml, :version=>"1.0", :encoding=>"UTF-8"
   4  
   5  xml.rss 'version' => "2.0", 'xmlns:content' => "http://purl.org/rss/1.0/modules/content/", 'xmlns:wfw' => "http://wellformedweb.org/CommentAPI/", 'xmlns:dc' => "http://purl.org/dc/elements/1.1/", 'xmlns:wp' => "http://wordpress.org/export/1.0/" do
   6    xml.channel do
   7      xml.title @feed_title
   8      xml.link @link
   9      xml.language "en-us"
  10      xml.ttl "40"
  11      xml.description this_blog.blog_subtitle
  12  
  13      @articles.each do |a|
  14          xml.item do
  15            xml.title post_title(a)
  16            xml.content(:encoded) { |x| x << '<![CDATA[' + a.full_html + ']]>' }
  17            xml.pubDate a.published_at.rfc2822
  18            xml.guid "urn:uuid:#{a.guid}", "isPermaLink" => "false"
  19            author = a.user.name rescue a.author
  20            xml.author author
  21            xml.dc :creator, author
  22            for category in a.categories
  23              xml.category category.name
  24            end
  25            for tag in a.tags
  26              xml.category tag.display_name
  27            end
  28            xml.wp :post_id, a.id
  29            xml.wp :post_date, a.published_at.strftime("%Y-%m-%d %H:%M:%S")
  30            xml.wp :comment_status, 'closed'
  31            xml.wp :ping_status, 'closed'
  32            xml.wp :post_name, a.permalink
  33            xml.wp :status, 'publish'
  34            xml.wp :post_parent, '0'
  35            xml.wp :post_type, 'post'
  36            for comment in a.comments
  37              xml.wp(:comment) do
  38                xml.wp :comment_id, comment.id
  39                xml.wp :comment_author, comment.author
  40                xml.wp :comment_author_email, comment.email
  41                xml.wp :comment_author_url, comment.url
  42                xml.wp :comment_author_IP, comment.ip
  43                xml.wp :comment_author_date, comment.published_at.strftime("%Y-%m-%d %H:%M:%S")
  44                xml.wp(:comment_content) { |x| x << comment.full_html }
  45                xml.wp :comment_approved, '1'
  46                xml.wp :comment_parent, '0'
  47              end
  48            end
  49          end
  50      end
  51  end

Then hit your typo blog at http://myblog/xml/wp and save the file to import through the WordPress interface.