Dear Mr. or Ms. Miroslav Mrajca,
I would like to express my deep gratitude to your work and your contribution to origami community around the world.
However, I don't see any problem with our share of this book at this site. Maybe you can be surprised when reading this but please listen to my explanation.
We share the book, but we don't print it out for commercial use. I believe that most of people here will use that book personally. "I download this one but only for personal use" I swear so I don't understand what the problem is.
Like a song, you can sing a song anytime anywhere without licence, right?? Everyone around the world can sing a song without permission of composer, right?? of course if they do not perform this for commercial purpose. However, I totally agree with you that they must PAY ROYALTY FEE IF THEY WANNA EARN MONEY FROM THESE such as in a musical performance, opera concert, etc.
Finally, you can disagree with my opinion and do not publish any COS any more. However, please think about Windown OS. Do you know why it is so popular all over the world?? From my point of view, this comes from strategy of Microsoft. He lets users access his product nearly freely, but he charges any company/organization/individual that want to make money from it. That's why everybody wants to use Windown or at least knows how to use Windown, which means popularity.
What a pity if you decide not to edit COS any longer. It will be a loss not only for origami fans like me but also for your reputation. Thank you for your understanding if you can read until now.