I just checked out Google Trends for "Jehovah's Witnesses" (Denomination). Not sure if the link will be to the term but let's try:
http://www.google.com/trends/explore#q=%2Fm%2F0dtdq
Now, look at the "Regional Interest" which I presume shows where there are most searches. It is a story in itself. Countries with challenges appear to be prime targets for cults like this to exploit.
- Angola
- Zambia
- Rwanda
- Congo (DRC)
- Malawi
- Togo
- Haiti
- Ghana
- Zimbabwe
- Madagascar
If you look at things by City then it's all Africa and South America.