alt.cyberpunk.tech - join
Cyberspace and Cyberpunk technology.
Low activity, 40 subscribers, Usenet

alt.cyberpunk.chatsubo - join
Literary virtual reality in a cyberpunk hangout.
Low activity, 106 subscribers, Usenet

Postcyberpunk - join
This is a group whose purpose it is to discuss the science-fiction genres ending in -punk, most specifically, postcyberpunk.
Low activity, 45 members