[Textbook-l] Licenses

[Daniel Mayer]

I just realized something I should have a long time ago; Our use of the GNU 
FDL is completely copyleft. Read below;

:Permission is granted to copy, distribute 
:and/or modify this document under the 
:terms of the GNU Free Documentation 
:License, Version 1.2 or any later version 
:published by the Free Software Foundation; 
:with no Invariant Sections, no Front-Cover 
:Texts, and no Back-Cover Texts.

Note especially "with no Invariant Sections, no Front-Cover Texts, and no 
Back-Cover Texts." Hence, we only give permission to use our text if the 3rd 
part does /not/ add Invariant Sections, Front-Cover Texts, or Back-Cover 
Texts. 

Therefore, for example, Britannica could never legally incorporate Wikipedia's 
content and add a Britannica-ad in an Invariant Section linked from every 
article. That way, every improvement they make to the Wikipedia content can  
be backported into Wikipedia. The cycle of positive-feedback continues.

This makes me feel much better about our use of the GNU FDL. 

-- Daniel Mayer (aka mav)