Mega Church vs. Small Church

I'm writing a 4-part series on the mega church vs. small. Large churches are moving into our area in leaps and bounds. There are more and more people not going to church so how are these churches filling up their pews? What is the draw? What works? What doesnt?
Top preachers, including Alister Begg, weighed in on the topic.

http://www.thesuburbanite.com/communities/x1676791762/Large-churches-thrive-here