tangent: is $2.17 an hour really typical pay for waiting tables in the states? In Australia, minimum wage is around $15 (I think). No wonder tipping is so important in the US.
[1] https://secure.wikimedia.org/wikipedia/en/wiki/Minimum_wage_...
So, yeah, it's low, but as long as the server is doing a decent job, people will tip, and at a decent restaurant, they can actually do better than the (honestly pretty low) normal minimum wage.