User-agent: *
Disallow: /administrator/
Disallow: /cache/
Disallow: /components/
Disallow: /images/
Disallow: /includes/
Disallow: /installation/
Disallow: /language/
Disallow: /libraries/
Disallow: /media/
Disallow: /modules/
Disallow: /plugins/
Disallow: /templates/
Disallow: /tmp/
Disallow: /xmlrpc/

User-agent: Googlebot
Allow: /components/
Allow: /images/
Allow: /js/style.css
Allow: /media/
Allow: /modules/
Allow: /plugins/
Allow: /templates/
Disallow: /404
Disallow: /administrator/
Disallow: /cache/
Disallow: /includes/
Disallow: /index.html  # пишем если
Disallow: /index.php   # включен mod_rewrite
Disallow: /index.php? # эти 3 строчки 
Disallow: /index2.php?
Disallow: /installation/
Disallow: /language/
Disallow: /libraries/
Disallow: /logs/
Disallow: /tmp/
Disallow: /xmlrpc/
Disallow: /*.pdf
Disallow: /*.swf
Disallow: /*?limitstart=*
Disallow: /*=atom
Disallow: /*=download*
Disallow: /*=rss
Disallow: /*=watermark*
Disallow: /*com_mailto*
Disallow: /*format=*
Disallow: /*lang=ru*
Disallow: /*pop=*
Disallow: /*print=*
Disallow: /*print=1
Disallow: /*report?commentID=*
Disallow: /*tag
Disallow: /*task=vote*
Disallow: /.htm
Disallow: /.html
Disallow: /?format=
Disallow: /component/banners/click/5