You might have listened two big names over the world, those have earned billions dollar in such young age. Larry page & Sergey brin has started google search engine. With the help of google search engine, they have created history on the web. They have started a strong method of searching over the internet. In the virtue of there minds, they have created best search engine of the world.
Google is almost known to every user of internet or not. If any person ask about searching then first name come google. Google has started different programs for earning. Two programs are very known to people, which are google adwords and google adsense.
Google adwords is used by advertisers. When you search on the web then you can see ads in your page in your right hand side. Google takes amount from advertisers to advertise there ads in search engine results and you might also seen google ads in sites. Bloggers, webmasters advertise google ads in there sites for generating revenue. This revenue can be generated by pay per click, pay per lead, per impression and others too.