Allow users to view plain text and html versions of articles

I need an easy way for users to get a plain text version as well as the original html of the post (note: not the entire webpage containing the post, just the post itself).

Ideally, I’d like the plain text version to be a downloadable file, and the html to be output to a new webpage that has the html in tags, though a download will be fine, too.

Any suggestions?

I had a thought that maybe this could work by making simple modifications to one of the printable page plugins.

Why this is necessary: I let other people republish my articles on their sites. Many of these republishing sites add hundreds of articles a week and that makes it practically impossible to bother with cut and paste etc.