How do I find people on the Internet?
USENET archives
The Massachusetts Institute of Technology (MIT) maintains an archive that contains the e-mail addresses of most of the people who have posted articles to USENET newsgroups. USENET is the network which carries newsgroup articles.
If you believe that someone has posted an article to a USENET newsgroup, you can
probably get their e-mail address by requesting it from the MIT archive via electronic
mail.