A person should not do anything on the clock that they are not paid to do. If someone is doing things at work that's making them unproductive, it will catch up to them in the end. I have a huge work ethic and am very task oriented. I couldn't imagine wasting my time on the clock.
I'm a live and let live kinda gal, but like if I said up there, if he is causing people to feel harassed he should be made to stop it. I'd ask him myself though, before I went to the boss.
I can't judge him for that since I personally spend too much time on the SKMB at work but it's not where other people can see it to be offended by!
Good call on the saying something myself. That's definitely worth thinking about. Thanks!