I've come across the blogs of many who speak with great authority. They contend that they have an obligation to point out the errors of others. If only their authority was backed up by scripture, then I would go back for a second visit to their blogs.
No, this modern day phenomenon hasn't caught God unaware. When Jesus prayed for his disciples in John 17, he looked past his day and prayed not just for his disciples, but said "I pray also for those who will believe in me through their message, that all of them may be one, Father, just as you are in me and I am in you. May they also be in us so that the world may believe that you have sent me. I have given them the glory that you gave me, that they may be one as we are one— I in them and you in me—so that they may be brought to complete unity. Then the world will know that you sent me and have loved them even as you have loved me."
Did you notice that his concern wasn't for unity for the sake of unity, but for the sake of the world. Jesus isn't concerned about whether his sheep eat facing north or south. His judgment will be turned toward the shepherds who argue amongst themselves while his sheep wander away, malnourished, and non-productive.
Lord, give us your heart, so that when you return you WILL find faith in the earth.