On Mon, 16 Oct 2006 21:35:22 -0400, Gregory Maxwell wrote:
[snipping an informative post]
As far as dual licensing, the GFDL and CC-By-SA are
not compatible.
This statement is a bit confusing. Yes, the GFDL and the CC-BY-SA seem to
be incompatible (meaning you can't simply copy stuff published under one
license into a work created under the other license).
However, as you note later on, there is nothing to stop you from licensing
the same work at the same time under two, incompatible licenses.
But this is not what I had been talking about in the first place. Dual
licensing as it is used as a business model in the software industry
combines a copyleft license with a proprietary license. You can get the
software under a copyleft license for free, or you can pay for a
traditional, proprietary license of the very same source code (allowing
proprietary derivative works).
Roger