You are speaking as freely as I am. I don't expect Jim Robinson to have to leave everything I say or every thread I post up on his website. If he decides he doesn't want it there, he has the right to remove posts with no obligation on his part to explain or justify his actions though at times he does do so. And if he has granted authority to others to delete posts and threads, even including mine, that's well within his property rights as well.
If I can't post something here, I simply post it elsewhere. Is there some reason you can't?