Hi Paul, it's great to see your expertise so openly exposed here :) :) :)
I have a question... more of a philosophical one I think. I understand the differences in CC licences & I certainly understand the value of having a "wide" open licence: a CC-BY gives incredible freedom to potential users. But I worry a bit that by honouring this ideal licence so much, we might de-value other good openness intentions. For example, at College of the Rockies this semester we have an instructor who took the bold move of adopting a free textbook for his students. (The course is Introductory Astronomy & the book is Astronomy Notes, by Nick Strobel & you can see it here: http://www.astronomynotes.com/) As you can see, this is NOT an open as in CC-BY sort of book. But to be honest, as far as the students are concerned it is "open" because it is openly available. The instructor is very happy with the quality too.
I'm just thinking we shouldn't be too hard on those who are generous enough to provide any level of openness to their creative works. Sure, it would be great if this particular author would re-licence his work for re-use etc. but if there's one thing we've all seen from this forum (& other places) openness is a journey & most people don't start at the ideal state.
Thoughts???
Thanks
Gina