To Tip or Not To Tip

I was a waitress in a bar for a semester in college. Without a doubt, it was the most miserable time I've ever had. Not only because it was a rather questionable job, but also because my income was dependent on someone else's attitude and perception of my service and speed. Because of that experience, I try to be a very good tipper -- the hard part is knowing how much to tip for other services.

Huzzah (once again) for internet info graphics!