Can my commenters sue me for editing or deleting their comments on my blog?
Generally no, if you are not the government. Section 230 protect a blog host from liability for “any action voluntarily taken in good faith to restrict access to or availability of material that the provider or user considers to be obscene, lewd, lascivious, filthy, excessively violent, harassing, or otherwise objectionable, whether or not such material is constitutionally protected.” This would include editing or deleting posts you consider objectionable, even if those posts would be protected by the First Amendment against government censorship.
Can my commenters sue me for editing or deleting their comments on my blog?