That site, K, is a bit, shall we say, right wing, in its pov. If I recall correctly, it is run by a convert in England. While the site has a wealth of useful resources, some of the commentary is distinctly "non-mainstream".
+Kallistos, on the other hand, tends to be rather too Western and Anglican in his mindset, at least in the opinion of some of us. He too is a convert...from Anglicanism.
Unsure what you mean by right wing...
The book seems interesting though, and I thought the summary of the events at a meeting between Orthodox and Anglican leaders was interesting...
Previously I'd just assumed that all the Orthodox pretty well feel salvation only lies in the Orthodox church. I didn't realize there was as much confusion/question on the issue as the book suggests.