The "Note" on top. PG says: "The strategy described at the end of this essay didn't work. It would work for a while, and then I'd gradually find myself using the Internet on my work computer. I'm trying other strategies now, but I think this time I'll wait till I'm sure they work before writing about them."

I developed this method independently, and I've gotten it to work (more or less).

The trick is that you need to make it more difficult to access your "time wasting" sites on your work station.

I do this by adding entries into my hosts file and redirecting certain sites to 0.0.0.0, this way I need to use another machine when I want to browse these sites.

This helps maintain the separation, and keeps you from mindlessly entering in your favorite urls in a browser while at your desk.