Some are posted almost instantly. Others may take days to circle the planet. Some sites save some messages and junk others, but all messages manage to make their way around the planet. Just as anyone can send a message, anyone can create a newsgroup. Anyone can remove a newsgroup.
Any site can accept or reject a newsgroup.
Any person who frivolously creates a newsgroup incurs the wrath of serious Usenet users, who will outnumber pranksters and remove the mischievous group. So, for a newsgroup to survive, it has to be created according to rules accepted by almost all serious users. All rights reserved. The newsgroup is open to all writers, editors, researchers, digital programmers, multimedia artists, Web authors and designers, literary agents, publishers, other workers in the industry, civil libertarians and labor unionists. It is not limited to NWU members, and no NWU officer or staff member has any more influence on the newsgroup exchange than any other Usenet user.