http://zqktlw5bf6oycxq6qod452xnvdfcqhfwliz54bkul736g6b454jrk2ad.onion/wiki/Anonymous_Communications
Of course, all of this paranoia about AI tracking you down is completely irrelevant if you do something stupid like post your Tor service URL to a mailinglist under your physical name, post an article on the public web or mailinglist and then also post it on your "anonymous" web site, or post a tarball full of sourcecode where all file ownership and CVS info contain your username.