User-agent: sistrix
Disallow: /
User-agent: Slurp
Disallow: /
User-agent: dotbot

User-Agent: Googlebot

Disallow: /download/
Disallow: /frames/
Disallow: /rss_feeds/ 

User-Agent: *

Disallow: /download/
Disallow: /frames/
Disallow: /rss_feeds/

User-Agent: Googlebot
Allow: /

User-Agent: *
Allow: /