What about putting the session key last, and restricting access for those URLs,
like
http://yoursite/special/document.html
http://yoursite/special/document.html/sessionkey1/
http://yoursite/special/document.html/sessionkey2/
are equivalent so you would add the following to robots.txt:
/document.html/
Klaus Johannes Rusch
-- e8726057@student.tuwien.ac.at, KlausRusch@atmedia.net http://www.atmedia.net/KlausRusch/ _________________________________________________ This messages was sent by the robots mailing list. To unsubscribe, send mail to robots-request@webcrawler.com with the word "unsubscribe" in the body. For more info see http://info.webcrawler.com/mak/projects/robots/robots.html