Development of Creative Commons licenses

[Sigmascape1 AT cs.com]

Hi,

I realize this list is designed to answer questions relating to CC and its 
licenses, but more and more, I see 'new' content appearing on the archive.org 
site that is in the PD. Recently, a full-length animated movie (Guilliver's 
Travels) found its way on to the site. Is this because material that is in 
the PD is still being uncovered, or is it that someone finally created a 
version of the content that is downloadable? 

Also, I'd still like to see a Creative Commons mailing list designed just for 
Public Domain issues.

Thanks!

MLF