Blog: Dianetics Survey - 2017-05-28
Of course, this is a stacked deck. They ONLY send this out to scientologists.
It appears they are doing a pretty good job. For Dianetics to have a 71% 5 star rating, it means that 71% of the reviews have been done by scientologists. Because regardless of whether you agree or disagree with the fundamental principles of Dianetics, there can be no doubt that it is NOT clearly written and is a tough read (assigning the difficulty in reading the book to "misunderstoods" is silly — it is objectively not easy to read) and it asserts a lot of things as "proven fact" for which there is no evidence.