I've also wondered about it (though I know that bring a server is still by no means an easy task). I think Freakonomics had an episode on topping and reported (

I've also wondered about it (though I know that bring a server is still by no means an easy task). I think Freakonomics had an episode on topping and reported (advertised?) some restaurants that split the tip between servers and cooks, or just don't let the customer tip but pay their employees more, upfront.