They will never say-"don't go to xyz.com" . At least they are smarter than the newspapers who report on a John being arrested at the corner of so-and-so streets for patronizing ladies of the night. The following week all the good citizens of the community just have to investigate for themselves and business is booming for these girls as a result of the newspaper story.
China has mamanged to do a deal with Google to block out unwanted websites- Google will agree to any deal for $$$. China and knows that unfiltered knowledge from the Internet will lead to an overthrow of the present government. No doubt the society will have to set up their own ISP to provide safe approved and filtered internet service in the JW's homes. They gave up trying to control the wikipedia JW articles. They will give up on JW's policing their own surfing and will attempt to control it for them.