One novel idea implemented by Google is allowing its engineers to spend twenty percent of their time on projects of personal interest. This engagement in personal pursuits has led to the development of some of the corporation's most well-know products and services. AdWords, the advertisement program for Google, was a result of this policy. Google's Gmail, Which offers users one gigabyte of storage for email, and Google News, which allows searchers to exclusively search news publication, were also products of this approach. Google's undisputed reign in the world of search engines continues. People can customize their searches based on key words or by limiting results to branch out and excel in other areas as well. Its email service, Gmail, with its large storage capacities and a convenient interface, is only one example. Google Earth allows users to browse satellite images worldwide and zoom in on areas of interest. Google Talk is a service that allows users to talk through their computers. It is also an instant messaging service. Google Drive makes collaboration and document sharing easier. The list of innovative services continues to grow.