Yet another Christian denomination, United Methodist, is on the verge of splintering. Does it really matter? I'm not sure. On the one hand, further divisions of Christianity could weaken religion's grasp on society. However, the likelihood of Religion ever going away is highly unlikely. Until religion loses enough influence it is far better to have a stable structure in place for such a powerful institution. Each splintering could erode its stability and encourage the extreme fringes to exert themselves thus making each additional schism potentially dangerous.
Then again, Christianity (like all religions) has always been very fractious. With tens of thousands of Christian denominations and sects already in existence a few more probably won't make that much difference.