shoot, I surf the internet less when I work from home. I do take more breaks to stretch, exercise, or walk around, but those don't distract my mind. In an office, I feel somewhat caged and constrained by the presence of others. I end up trying to get my nervous energy out by surfing and end up distracted.
Not to mention that I get a lot of good work done after the sun goes down, and it's a lot easier to do that when you're working from home and people aren't commenting on how they haven't seen you lately(which happens at my day job all the time unless I'm in a chair 9-5).
All I can say is I wish I could do the same. I feel caged in an office, too, and in theory I'm more productive at home. On my good days, I am definitely more productive at home than in an office, but I wish I had more of those good days. I'm just too distracted by the Internet.
Not to mention that I get a lot of good work done after the sun goes down, and it's a lot easier to do that when you're working from home and people aren't commenting on how they haven't seen you lately(which happens at my day job all the time unless I'm in a chair 9-5).