Yes, it's a little tongue-in-cheek, but it occurred to me while reading the question on stealing a parents tuition by skipping, and I think that there is a real benefit in the question. Is it Gezel ...
If your parents pay for you to go to school and you ditch, is that stealing?
Why do Children Steal the Afikoman?
More generally, doing personal things like phone calls, emails, etc. while on company time. How far does the "everybody does it" rationale go? I believe there is some category in halakha that accounts ...
My neighbor has never set up password protection on his wireless router. If I wanted, I could wirelessly connect to his high-speed Internet service. May I use his Internet service without asking him ...