We don't regulate computers hardware on illegal speech/press use because some hundreds of users are using that hardware to display child pr 0n.
Courts might hold firingline or the NYT liable for copyright or libel, but the federal and state governments cannot require firingline to maintain liability insurance in order to have website and forum. They cant require you to prescreen comments (say equivent to requiring locks) and they cant require you to submit any material to a government agency for pre approval. You may exercise your own prudence in editing, moderating, and even if need be insuring, but it cant be required ahead of any harm.