Yep.  already put my thoughts about tips on a previous post of yours.

So important to give a good tip.  However.... I have no problem leaving a bad tip for bad service.  and you know the difference between a mistake and a horrible waiter.

it's rare.  but on the occassions that I do get one - I'm definitely not going to contribute to any false notions that they stay in that line of work.  going out to eat should be a fun experience.  and its expensive.  i respect waiters (hubby used to be one and is now a chef) but they need to respect their customers too.