Google co-founders Larry Page and Sergey Brin have respective net worths of $54.4bn and $53bn according to Forbes. Parent company Alphabet, which also owns YouTube and all other former Google subsidiaries, reported revenue of $110.9bn in 2017 and net income (profit) of $12.6bn.“Google” was included in the Oxford English Dictionary from June 2006 as a verb meaning: “Search for information about (someone or something) on the Internet using the search engine Google.”Page and Brin found each other obnoxious when they met in 1995 at Stanford University on a campus tour.Brin was a second-year student when Page started his studies at the university. Google started as a PhD project, when Page started collecting links on the Web in 1995. As the son of a computer science professor he knew that links worked like citations, giving a web page greater authority.By combining their maths and computer science expertise, the Google co-founders created the PageRank algorithm which led to search engine optimisation. SEO arrived with the Google toolbar which allowed webmasters to compare how Google saw their sites. Companies then found ways to manipulate the rankings.