1) Google dominates the search engine market worldwide with a 44.1% market share, much higher than its closest competitor Yahoo. 2) Google's PageRank algorithm, developed in 1997, helped make its search engine hugely popular by ranking websites based on the number and quality of inbound links. 3) Google earns nearly all (99%) of its revenue from advertising on its platforms like AdSense and AdWords, with advertising profits making up half of Google's total profits.