The 11/15/86 WT quoted earlier sums up why the GB are now using television:
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"...why do many evangelists [now The GB too] prefer TV as their medium? The Courier-Mail of Brisbane, Australia, notes that TV evangelists “make up to $120 million a year selling salvation. They appear in a blaze of electrified power and glory on 300 TV stations, and are worshipped like pop idols."