A Usenet newsgroup for dragon fans, and, of course, dragons themselves!
The group had (or at least used to have, I've been lurking recently) a lot of serious discussion about draconic issues, and also roleplaying threads, food fights, general insanity and silliness. In a word, a great newsgroup.
The "virtual world" where dragons (roleplayed and real) and dragon fans can meet is called with many names - Alfandra, Dominance and Wang Toodle are among the common names - but the One True and Real name is, of course, xgrmpflmprxyzzz.
The official website, with FAQs, is at http://www.dragonfire.org/.