Advertising is an integral part of our social and economic system. In our complex society, advertising has evolved into a vital communication system for both consumers and businesses. The ability of advertising to deliver carefully prepared messages to target audiences has given it a major role in the marketing programs of most organizations. Companies ranging from large multinational corporations to small retailers increasingly rely on advertising to promote their products and services. In market-based economies, consumers have learned to rely on advertising and other forms of promotion for information they can use in making purchase decision.