Welcome to WebmasterWorld Guest from 22.214.171.124
Forum Moderators: goodroi
edit according to link you gave you could use the * for all known robots i.e.
This would ban all known robots that obey the robots.txt
Does this work?
It depends if Examplebot honors the allow directive. robots.txt, don't forget, is not access control. It's a voluntary thing that the robots do.
Not all spiders read robots.txt, and some spiders accept proprietary parameters in robots.txt.