Are Mega-churches Hurting the Kingdom?

I would like to pose this question to hopefully elicit a few responses to this interrogative; are mega-churches a help or a hindrance to the body of Christ. For if we were to look at the Word Network, TBN, The Church Channel and even BET on any given day, we would find nothing but mega-churches prmoting their services, conferences, tapes and books, but are they really helping the body or hurting the body? They deliver messages on socialism, current events, how-to subjects, prosperity, planes, cars, clothes, etc., but is that really helping the body or hurting the body.

My question to you is, how do we obey the Great Commission and go out into this world to make disciples out of all men, to compel them into a life of service to the Lord within a local congregation, yet still remain faithful in our message, motives and mannerisms?

By the way, how good does my Lakers look now H.B. (lol). All the way to the title!