John, I came across this http://www.fsf.org/philosophy/categories.html - you may already have seen it.

>Hey Folks,
>
>Time for a little better definition of these three types of software because I found myself misusing them in a post.
>
>Public domain - the author does not claim a copyright. You can download, use, abuse, redistribute, spit on, bend, fold, spindle, and mutilate the software.
>
>Freeware - You can use and distribute this software "as-is" without compensation to the author but you better not include it in software you are producing for a fee or otherwise get cute with it without the author's blessing because the author *does* retain an enforceable intellectual copyright.
>
>Shareware - Same as freeware with the author expecting that if you find the software to be useful to you, then a small fee is requested.
>
>Researching this, I realized that I better start distinguishing what my files are when I upload things here. Hope this helps.