User-agent: Yandex
User-agent: Rambler
User-Agent: Google
User-Agent: Googlebot 
User-Agent: StackRambler
User-Agent: Aport
User-Agent: Webalta
User-Agent: Yahoo! Slurp
User-Agent: Googlebot
User-agent: BigmirSpider
User-agent: MetaSpider
User-agent: Slurp
User-agent: MSNbot
User-agent: Googlebot-Image
User-agent: Yahoo-MMCrawler

Disallow: /administrator/
Disallow: /cache/
Disallow: /images/
Disallow: /includes/
Disallow: /installation/
Disallow: /language/
Disallow: /libraries/
Disallow: /media/
Disallow: /modules/
Disallow: /plugins/
Disallow: /tmp/
Disallow: /xmlrpc/

Crawl-delay: 20