I'd be interested to know what percentage of internet users have accessed a so-called porn site. I'd say it was way above 90%, even if the access was curiosity rather than sexual pleasure. I remember the first time we got an internet connection in our office (back in the early 1990's). It was connected up initially to a manager's pc in human resources. While he was at lunch, a group of twenty-something secretaries used his machine to access some pretty blue stuff. When I heard, I had an informal talk to them, emphasising that it wasn't a good idea and that the h.r. manager's internet history could be tracked by the company. They desisted, and I took the view not to inform the manager. I never heard that any accusations of impropriety were made against him!
There are questions over Green. It may all be made up by Bitter Bob Quick. There's no evidence apart from Quick and his ex-mates word for it. If it is true, Green was not a government minister at the time. It occurs to me also, he was no employed by anyone. Aren't MP's their own bosses? Interesting that as I type this, Labour's Andrew Adonis is being interviewed by LBC and believes the issue over porn access by Green is a total irrelevance (though obviously, Adonis does not include any evidence of improper sexual advances)
There's another aspect on web-browsing, social media at work. There was a report recently that recorded that an employee's access to social media, facebook etc not only wastes huge amounts of an employee's time but can distract someone for on average 40 minutes after desisting. This has a huge impact on productivity.