User-agent: psbot
Disallow: /http://www.sitesell.com/sbider.html
User-agent: psbot/0.1
Disallow: http://www.picsearch.com/bot.html

Disallow: psbot/0.1
User-agent: DBLBot/1.0
Disallow: http://www.dontbuylists.com/dblbot.html

Disallow: spider48.yandex.ru
User-agent: DBLBot/1.0
Disallow: http://www.spider48.yandex.ru