The Shack is very popular. People often ask me about it. Here are some thoughtful links:
Preacher and Author Ray Pritchard has written a bunch of really good books. He has a beautiful web site full of free, helpful resources. I have read his blogs for years. He has read and commented on The Shack. I would suggest you read his posts on the topic if you are interested in the book.
Theologian Al Mohler discussed it on his radio program Mohler is one of the finest, most thoughtful Christian leaders in America.
Blogger Tim Challis has reviewed the book, too. I would suggest you download the PDF version from his site.
We who are teachers–who are trying to help people wrestle with human hurts and questions–will use every creative means possible, but we must keep in mind the warning of James 3:1:
Not many of you should become teachers, my brothers, for you know that we who teach will be judged with greater strictness.