In what was billed as a "historic" meeting Sunday, Mormon apostle L. Tom Perry announced that the Utah-based faith’s largest missionary force ever — more than 70,000 strong — will tap online tools to help them connect with and teach their "investigators."

"The world has changed," Perry said. "The nature of missionary work must change if the Lord will accomplish his work."

People today are often "less willing to let strangers into their homes," he said. "Their main points of contact with others is often via the Internet."

And so, LDS missionaries are now authorized to use the Web "during the less-productive times of day," Perry said, "chiefly in the mornings."