At the soup factory, I could do pretty much anything and no one cared until a restructuring gave me an idiot boss who threw a fit about LJ of all things. He really was an idiot.
Since I am officially self employed now, even though I still go into the office everyday, etc., I can pretty much do anything I want so my answer is yes. I use my own laptop in the office but am on the company's wifi so I avoid porn sites or anything too offensive. Then again, I don't think there's anyone here who would be able to track our Internet usage since I spend a good chunk of my day reminding people how to do things like cut n paste.
When things are slow, I spend a good chunk of my day on BFP, Facebook or playing WoW. When things are not slow, I can go days without logging in to any of them except maybe in the middle of the night. So not seeing me in the middle of the day is a good thing!
