Telecom Computer Security Databases Handheld Devices Tech. Not that internets and intranets aren't on the way there, but they are not the end. For one thing, reading words on a computer screen may not be the perfect media for many people. Any system that closes out members due biases becomes imperfect. That is part of a more general finding that people have tendencies and preferences about what they draw upon as sources of meaning.
Some folks tend to speak to peers, other's turn to official memo's, others talk radio, etc.
There is good evidence that these are somewhat culturally specific. A perfect knowledge management system must interface these types. It is partly the mixing that creates innovation. Also, look back at this discussion forum. Old streams are pretty much gone.