. Bitcoin requires massive redundancy.
So ?
So Gavin's comparison of bitcoin blocks to average web pages is completely inappropriate, and Nick Szabo's comparison to MT Gox is apt. Hence, epic meta commentary.
That's not how it works.
Nodes relay information to other nodes but one node doesn't need to broadcast to the entire network!
The burden of 'massive redundancy' you speak of is distributed across the thousands of nodes,
each responsible for communication with other nodes.