Internet Metaphors

The internet is filled with metaphors referring to real life. But why shouldn't it be the other way round? Here's two examples:

• Cc: anyone who stands between two people having a conversation, without participating.
• Bcc: a person furtively listening in on a conversation, while only one party in the conversation is aware of this fact; e.g., a cop eavesdropping on a mafia boss and a snitch carrying a wire, or an eyewitness listening in on the interrogation of a crime suspect.

And speaking of metaphors, if incoming data is known as a 'feed', shouldn’t we call outgoing data a 'shit'?