What is Google

Google is the most popular search engine in the world. Google is developed by Larry Page and Sergey Brin who is Ph. D. students at standford university. They developed a search engine algorithm that ranked Web pages not just by content and keywords, but by how many other Web pages linked to each page. Some sites do not follow google guidlines such as keyword stuffing, link exchange cloaking etc. To remove this problem google update their algorithm time by time.