There's nothing wrong with censoring ass hats. Good moderation is required to maintain a healthy community. AskScience is considered one of the best subreddits on reddit precisely because the mods are ruthless in deleting off topic posts, jokes, memes, etc. Now, you don't have to go that far, because this community engages in a wider range of discussions, but a good line to draw is, "is this person annoying the piss out of everyone?" BTW, as I said in the other thread, freedom of speech is a right granted by a government not to interfere with your expression. It doesn't mean ass hats can use someone else's property to spout off. There's an old saying that freedom of speech belongs to him who can afford a printing press. Or in this case, a server.