I am always struct by how absolutely naive some people are about church growth. They point to the fact that their church has grown X percent over X amount of time as if that "PROVES" that God is blessing their ministry and that those who would dare criticize the false doctrine and Bible twisting that is coming from their pulpits are just not seeing the bigger picture.
One of the dumbest examples I've seen of this is Steven Furtick's defense of Joel Osteen. According to Furtick, guys like me and folks who understand systematic theology and the Biblical languages need to shut our mouths and stop criticizing Joel Osteen because Osteen 'packs the freaking Compaq Center 2 times every freaking Sunday'. (that's a direct quote from Furtick)
What Biblically challenged egomaniacs like Furtick need to deal with is that not all growth is good growth. In fact, if your church congregation has a weakened or non-existent immune system and isn't defending against false doctrine then the growth that it is experiencing is more than likely CANCEROUS GROWTH.