I am using RH8 to publish a policy manual. Half the manual is published externally the other internally. To do this we used conditional tags. Recently we noticed that all the pdf within these sections could be googled. I tried applying the tag directly to the link in the section but this didn't work. Any suggestion on how I can keep this baggage files from showing up on the public domain?
The only way I know is to exclude PDFs from the search but that will be all PDFs. See Item 8 at http://www.grainge.org/pages/authoring/rh8/using_rh8.htm
You should request a feature change as you are not alone in wanting something like this. The more people who report a bug or request a feature, the more likely it is to be actioned. Please follow this link.
See www.grainge.org for RoboHelp and Authoring tips
Colum had a post about this in his blog, see: http://notcolin.wordpress.com/2009/07/30/excluding-baggage-files-from-your-output/
If you don't care whether the files are included in your project, as long as they can't be found by google, you can also add robots.txt as a baggage file to your project. In this file, you specify how the web crawlers should treat your page, such as excluding certain folders. See The Web Robots Page for more information.