A gratuity, or tip, is an amount of money given to a waiter or server in a restaurant in addition to the cost of the bill. In some countries, tipping is customary. In other countries, it is not. What is your opinion of the custom of tipping? What are the positives and negatives? If you are in a foreign country where tipping is customary, do you believe you should tip, even if it is not customary in your home country?