Of course at places to eat. If you get just normal service or better and don't tip at a restaurant here than that's pretty shitty. Waiters don't get paid anything substantial at all hourly really, its just tips. The rare few times I'll take a cab I'll tip, and haircuts. But restaurants are the main thing. In fact I'll call serious bullshit on somebody if they don't tip at a restaurant where the service has been ok, that's crap IMO. Now in other cultures where the waiters are paid regular wages, fine.