Now more than ever, small businesses can promote themselves online by targeting customers and expanding their networks, often for little or no cost. Businesses can promote themselves through a variety of techniques such as targeting customers by demographics, contributing to online discussions and drawing attention to new services. Advertising in the 21st century has become very versatile because of various online social websites like Facebook and Twitter, along with other blog atmosphere websites like Pinterest and Craigslist. In the last decade, the explosion of technological advances has produced unprecedented events in the history of mankind. One of them is the Internet and its conversion into a new medium for marketing and the use of social communication in advertising. Inevitably, the internet has changed our lives. One of them is the Internet and its conversion into a new medium for marketing and the use of social communication in advertising. Inevitably, the internet has changed our lives.