[joshuamorton]

They are already liable for such things because they make active editorial decisions.

If internet publishers make active editorial decisions, they are also liable. Consider the new york times online.

I gave an example elsewhere that the owner of a physical bulletin board wouldn't be liable for posters on it, even if they occasionally came by and took down ones that they felt should be removed (for any reason).

Section 230 claims that internet sites are more like a physical bulletin board then a newspaper, in that they are remove-later, not review-first models. Aa such they deserve the same liability as physical remove-later systems: relatively few.