Forum Moderators: open
The robots.txt does not follow the HTML standards that most web pages follow, but instead has to follow its own standards.
Here is a thread that we were discussing about the benefits and pitfalls of a robots.txt : http://www.webmasterworld.com/forum27/239.htm [webmasterworld.com]
Here is also the link to some helpful tools that will make sure your robots.txt is functioning properly: http://www.searchengineworld.com/cgi-bin/robotcheck.cgi [searchengineworld.com]
Lastly, here is the link to standard that the robots.txt has to follow: http://www.robotstxt.org/wc/norobots.html [robotstxt.org]
I know I may have indirectly answered your question, but here is your answer:
No, this method of placing a link in the robots.txt will not work......sounds nice though.