Google is in the business of systemizing knowledge in to searchable index through the Internet Age since it knows so much about all of us that no other advertising agency on planet Earth is capable of returning so much value for the money invested in publicity. Moreover by mastering the development of android it is even mastering the growth of Internet.
Most appropriately it is called Google AdSense that has become a boon of economic freedom for web-publishers worldwide. Likewise all sensible advertisers subscribe Google AdWords to invest in the online advertising because as the ultimate option available on Internet only Google returns the most of advertising value for money invested in to it.