Campus Crusade for Christ, an Evangelical ministry has a sub-ministry called “Global Ministry Outreach”. They function as the online outreach for Campus Crusade’s ministry. They buy search terms relevant to Christianity, religion and Jesus. Their ads generally direct people to websites like this one. Ads are displayed all over the world and they try to focus their ad buys on under-evangelized and closed countries.
What’s interesting about their ministry is that they give live tracking of events related to their advertising. If you go to GreatCommission2020.com you can see a map of where in the world people are visiting their sites, making a commitment to follow Jesus, providing their email and are engaging in a followup discipleship. All of these interactions are directed toward volunteer online missionaries who receive the email correspondence, answer questions and encourage new believers into an authentic relationship with Jesus. They’re currently putting together a network of churches for new believers to seek out.
This video tells the story of one online missionary.
Global Media Outreach can reach about 1 million people in a day for $60,000 (6 cents a click). I have my own reservations about the method and about the “Four Spiritual Laws” approach. But if you take their reported numbers and divide them by 10 to get a conservative estimate it cost about $45-$55 to find an authentic convert to Christianity. It’s an interesting project and easily the safest and most effective access into closed countries.
Their main competition for keywords is the LDS church.