Free book online

The other day I referred to a book opposing the concept of penal substitution, The Biblical Revelation of the Cross. The author has since contacted me to say that the whole book is now free online, here:

http://bible-study-online.org/atonement/

Thanks to Norman for making it available like this.

Being rather pressed for time, I've not had the time to read it yet. So let me know what you think.