What we call Megachurches in the U.S. are really becoming Mini-denominations.
“Megachurches are creating around them structures and especially functions that once were done by the denominations. They are creating alternative ways for churches and for religious people to get resources to do ministry, to do missions, to connect with other churches. All the things that were typically done by a denominational form are being done at a local church level—if you can call a megachurch a local church.”—Scott Thumma, co-author of “Changes in American Megachurches” and Beyond Megachurch Myths
(ht: christianpost.com, 9/13/08)