Organic Tomato Magic??

[dipchip2000]

I received an email from someone touting a new book recommending pruning all but three leaves from a plant to supposedly double the fruit set and harvest. Anyone here know anything about the book or the methods he described. I might be pretty gullible but will do nothing when it comes to my Tomatoes till is passes before the board of experts here on Tomatoville. I understand about the soil,water and airflow but drastic pruning seems over the top. Any comments please
ron