The discussion revolves around compiling a comprehensive list of mythologies for a website, with initial mentions including Greek, Roman, Norse, Celtic, Chinese, Egyptian, American Indian, and African mythologies. Participants suggest additional mythologies, such as those from Christian, Jewish, Muslim, Hindu, Japanese, and various indigenous cultures, including Australian Aborigine and Maori. There is a debate about whether certain belief systems, like Christianity and Judaism, should be categorized as mythology or religion. Some contributors argue that all belief systems, regardless of mainstream acceptance, should be included in the mythology discussion, while others maintain a distinction between mythology and established religions. The conversation also touches on fictional mythologies from literature, such as those from Middle Earth and Lovecraftian lore. Overall, the thread highlights the complexity of defining mythology and the varying perspectives on what should be included in such a compilation.