I've raised this same issue a couple times, most recently on html-wg,
at:
http://www.acl.lanl.gov/HTML_WG/html-wg-95q1.messages/0430.html
The best answer we came up with is to write: &
Some (broken) browser's don't grok, so there's no way to please
everybody today.
There was a nice folloup that gave a summary of the state of the art:
Re: Forms/CGI urls: '&' in HREFattributes
David Robinson (drtr1@cam.ac.uk)
Fri, 10 Feb 95 12:53:12 EST
http://www.acl.lanl.gov/HTML_WG/html-wg-95q1.messages/0455.html
Dan