One of the two main Usenet newsgroups about the works of J.R.R. Tolkien. Source of any number of intelligent philosophical discussions, as well as parody, and of course, this being Usenet, great amounts of flame wars.
As with any newsgroup, reading the FAQ is in order before trying to post. Even after reading the FAQ, I would advise against anyone, unless they have anything seriously important to say, writing about Tolkien's racist, sexist, patriarchal undertones, mentioning the Catholic Church in a derogatory manner, or asking whether Balrogs have wings.