I don't do my surfing ONLY at my lunch break. I used to, but it gradually developed to whenever I felt bored. Also, since there is no fixed time for my lunch break, I could take my lunch break any time I felt like it, which also meant I could surf any time I felt like it. Nobody could tell, by watching me (unless they watched me all the time) whether I was abusing it or not.

I figure if I start going away from my desk for a half hour every day, it will remove all suspicion.