Robots No Follow

To improve search engine optimisation of sites using Drupal's PDFView, can you please add an option to this module's setup page to allow for the inclusion of a Robots exclusion directive, as per: http://www.robotstxt.org/wc/exclusion.html so that search engines do not see two copies of the same/very similar pages.

Alternatively, if the URL for accessing the PDF version of pages could be changed from http://www.site.com/node/pdf to http://www.site.com/pdf/node (note pdf is now folder rather than appended string) then a robots.txt sitting in the root of the site could contain the following:

User-agent: *
Disallow: /pdf/

Thanks!

Simon