Ha. I get the feeling your comment is a little tongue in cheek. I have a pet theory that precisely the opposite will happen. That the internet will give rise to increased differences and destructive behaviour. Why? Because the internet allows people to be exposed to widely opposing views, to trolling by groups with opposing views, allows people to "meet" and argue, allows even the most extreme of viewpoints to build an audience, and allows disparate groups to rally together. E.g just look at Atheism vs Religion. I could see that coming to blows at some point.