You talk about it as if it's dead.
USENET was the original social network. But moderation issues (ie: pornography, cracked software distribution) has made it more difficult to interact with raw USENET today unless you specifically pay for a USENET service. Universities have been closing down their public and free USENET servers in recent years.
Overall, discussions online happen over Reddit, Facebook... and of course, Hacker News. I bet you an entire generation of readers have no idea what USENET is.