MineNet will be the first in-game computer network in MC.
Every computer network will need a protocol. This will be MineNet Protocol.
Computers in MineNet will have simple addresses, stating who is reachable where. The goal of this protocol will be to deliver basic mechanics like sending a packet, receiving a packte and pinging an address. Plugin developers will have the opportunity to implement three block types after that: Terminals, Network hubs and servers. Via a gui in external minecraft plugins, people will be able to browse the MineNet BBS-style.
Two blocks aren't connected with redstone wires? Sorry, no MineNet for you today. :)
This will be the first net in the net. :D