Almost all US based religious groups have a presence on the Internet, regardless of the number of people associated with them. Besides, a recent survey reveals that 64% of Internet users have used the Web for religious or spiritual purposes. The author places the use of technological advances by religious groups in a historical perspective. She underlines that the use of the Internet is a logical consequence of a strategy of mass communication set up by Evangelicals in the revivals of the 18th and 19th century. She shows that today the Internet amplifies, more than it creates, the development of new religious practices by fostering the expression of personal beliefs, and modifying the relationship to traditional modes of worship.