Can the house church movement reach the nations?

There are many popular simple church books that are have gained populairty in Christian circles such as Organic Church by Neil Cole, Revolution by George Barna, Reimagining Church by Frank Viola, and Simply Church by Tony and Felicity Dale. They all point to the statistics concerning the traditional church in the United States being in decline with the exception of some of the mega-churches. They claim that a lot of people are tired of church in general and looking for more organic expressions of the body of Christ meeting in homes and public places doing life together. One of the many pros of the house church model they say is its reproducbility and low cost. They point to the fact that there is no overhead for paid clergy and buildings which frees up finances to do missional kingdom work. Could the house church movement be one of the key players to seeing the nations reached in our generation?

A friend of mine, Don Davis, created a network called House2Harvest to help these house churches be more strategic in engaging unreached people groups. I think it would be awesome to see the house church networks in the U.S. adopting unreached people groups, consistently interceding for them, giving financially to the work being done among them, and hopefully sending many long-term laborers themselves.