4. Pitch it with factsHOWTO Negotiate a Creative Commons License: Ten Steps (via O'Reilly Radar)
Use case studies to argue with facts. It also helps for them to see that other reputable publishers have licensed books Creative Commons. O’Reilly has some a study on an Asterisk book that we used very effectively.
The Asterisk book sold 19k copies over two years (about what comparable books from O’Reilly were selling), but was downloaded 180,000 times from *one* of the 5 sites that mirrored it.
Also consider google as arbiter:
Results from google search breakdown of references to the two books in the oreilly case study (at the time of negotiation, early 2008): asterisk: 139,000 references in 2 years (2005-2007), or 70,000 per year
understanding the linux kernel, 42,000 references in 7 years (2000-2007), 6,000 per year
So there was 10x the press/blog/reference/hits for the CC licensed book.