Over the last few years, the pressure to leave a gratuity has increased. More people than ever have their hands out looking for a tip. USA Today just did a study and found that, on average, the worst tippers in America are from Illinois. The most generous are from California. The state of Tennessee didn't fare so well. We're in the bottom five states when it comes to leaving an average tip. I'm not surprised; Tennessee isn't the generous state it once was...