Not quite Frank.
If I post some defamatory material on PPRUNE, the owners of the website may be at risk as well as me.
Purely hypothetically, if e.g. Pro Aviation chose to author and publish, on its own website, an ASRR Submission that contained material defamatory of current or past CASA staff, Pro Aviation alone is at risk of defamation actions brought by those current or past CASA staff. If the ASRR Panel decided to publish the same (hypothetical) submission on the Department’s website, the Panel and the Department may be at risk as well.