Stop distributing .doc files
maxmackie.com
maxmackie.com
There are good reasons to be concerned about this from a business perspective as well. MS Word files can contain a tremendous amount of non-visible information, including reverts to recently-made changes, values coded into the template, meta-data, etc. By exporting to PDF, you strip a good portion of that information away.
Gmail makes it extremely easy to view those files online, and it's equally easy to convert them to Google Docs format for further editing (all taking place within the browser, no need for Office.)
Anyways, it's extremely futile to stop this phenomenon from happening by means of a blog post.
This will surely reach the target audience.