They are effectively required to though. If you listened to the SOPA hearings, for example, not a one of the lawmakers understood that Google was not hosting t

They are effectively required to though. If you listened to the SOPA hearings, for example, not a one of the lawmakers understood that Google was not hosting the pages. They all think of Google as basically the internet. If Google does not make an effort, as they do, then it would be a PR disaster.