Contrary to any policy that a company might have regarding internet usage, any time spent on personal use is counter productive and costing the company money. It's very simple math actually.
Study: surfing the Internet at work boosts productivity - Ars Technica
:shrug:
I am pretty much on the internet all day, and I have never, ever been late for any goal dates on a project. Not to mention I saved my company about 2 million dollars this year, and potentially a million per year after that.