Internet has Fragmented: Mobile, Video Will Accelerate Change

Though it is painful for many Internet proponents, the "Internet" now has fragmented. Though in a physical sense there might be said to be "one" Internet, in practice this is no longer the case.

There are lots of private networks, language communities have developed, and national government restrictions on unfettered access to content and use of services. In some sense, it still is true that any end point can reach any other public endpoint.

But we now are witnessing the birth of a mobile-optimized "Internet" as well as a "video-optimized" net, the primary constraint being screen size for the former, bandwidth the issue for the latter.

http://mashable.com/2009/04/27/my-internet-your-internet/