After visiting this site, I am now convinced that there is, in fact, a newsgroup for pretty much every interest under the sun. Created and maintained by Harley Hahn, author of Harley Hahn's Internet & Web Yellow Pages, this site makes it exceedingly easy to discover newsgroups related to your hobbies or concerns. Newsgroups are listed by category and topic (example: Hobbies: Scale models: Model rockets). If you have a newsreader installed, the provided link will take you right to the messages. A keyword search engine is also provided, with options to match whole or partial words and to exclude or include adult groups in your search.