When you do the problems on GoChild, you do realize of course that GoChild is most likely pirating from many Asian go problem books for which it probably has not obtained the permission of the author or the publisher.
Now, in the case of GoChild, I can see how the problems are grouped and pulled directly from the books, so I'm not going to argue about that. However, what ramifications does copyright have for these collections? Problems, even complicated ones are still just positions on a Go board. What are the grounds for copyright infringement? Does the product in question (blog post, program, etc) need to contain the solution as laid out in the book? Does it require a certain number of problems? Is it still copyright infringement if the new author provides deeper insight and analysis on the solutions?
I'm curious more than anything. I find copyright to be an interesting topic of conversation.

