A lot if you're posting from your Apple ][. Users should really be signing their posts themselves anyway, not relying on authentication and vouching from a third party. Session authentication is kind of silly for blog posting IMO. The problem is that message authentication still isn't common so people just use session authentication since it's easy and it's what we have.
I can’t help but think OP was being sarcastic
lol. Fair point. I totally failed to see that possibility