Liberty Forum is now censored. http://www.libertyforum.org
The "moderator" is actually censoring posts, that is, not allowing posts to be entered at all based on the questions or points the poster raises.
All posts are "pre-screened" before being allowed to be posted.
That is denial of free speech by censorship, not "moderation". Moderation is simply not allowing anyone to attack the board, be dis-ruptive or belligerent for unjust reasons.
What Liberty Forum is doing is blocking the free speech of its posters by not allowing their posts or voice to get passed the "moderator" based on the prejudice of the "moderator" toward the content of their post.