Am delighted to report that The Joy Of Sects has had a write up from The Sun online - here.
The bit about The Flat Earth society is especially funny - wish I'd thought of those gags.
Have also had a very pleasing review in Nuts magazine:
'Endless strange cults are listed here, from ancient groups who wanked in public to Swiss weirdos who killed themselves while waiting for aliens to arrive. Nutters.'