I haven't had much experience with the Creative Commons License but I did purchase a pdf of Eclipse Phase. It uses the CCL and describes it as follows:
This work is licensed under the Creative Commons Attribution-
Noncommercial-Share Alike 3.0 Unported License.
To view a copy of this license, visit:
http://creativecommons.org/licenses/by-nc-sa/3.0/
or send a letter to: Creative Commons, 171 Second Street, Suite
300, San Francisco, California, 94105, USA.
What this means is that you are free to copy, share, and remix the
text and artwork within this book under the following conditions:
1) you do so only for noncommercial purposes;
2) you attribute Posthuman Studios;
3) you license any derivatives under the same license.
For specific details, appropriate credits, and updates/changes
to this license, please see: http://eclipsephase.com/cclicense
Now the Eclipse Phase rulebook is 420 pages long and has lots of Transhuman SciFi goodness. It has it's own setting, and as a bonus it is a d100 system. Is there any interest in the text within it ? By my very uninformed reading of the license, the text of the pdf could be extracted and used in a non-commercial publication as long as the proper credits were given. I might be able to supply that text.