Of its 250 million users worldwide, Facebook says, more than 150 million people choose to write something in the religious views box.

Such public proclamations of beliefs used to require a baptism in water, or a circumcision, or learning the five pillars of Islam. Now Facebook users announce their spiritual identity with the stroke of a few keys. And what they are typing into the open-ended box offers a revealing peek into modern faith and what happens to that faith as it migrates online.

The following is a list of the most popular faiths expressed on the Web site:

Top-10 religious views:

1. Christian

2. Islam

3. Atheist

4. Agnostic

5. Hindu

6. Buddhism

7. Jewish

8. Spiritual

9. Sikh

10. Jedi

Because “Christian” and the various denominations associated with it are so dominant, Facebook combined within “Christian” the following categories: “Catholic,” “Protestant,” “Episcopalian,” “Methodist,” “Presbyterian,” “LDS” and “Mormon.”