From Videotron's FAQ:
Why is the Videotron news service being eliminated?
Newsgroups, established in the early 90's, had the purpose of allowing Internet users to discuss and exchange ideas on various subjects. As the Internet evolved, new discussion tools emerged: instant messaging, blogs, chat rooms... These different options perform very effectively and offer solutions particularly well suited to discussion on the Internet. They have gradually gained in popularity, while use of newsgroups has constantly decreased.
When will the Videotron news service be eliminated?
The Videotron news service will be eliminated on September 9, 2008. Effective from that date, the newsgroups will no longer be accessible.