Web search engines
Nowadays, technology is changing extremely fast and you can hardly predict how it will transform society in 20-30 years. Things are getting more convenient and simpler and some tasks, that took a good amount of time a few decades ago now can be fulfilled in a couple of seconds. Information searching by web search engines such as Google, Bing, Yahoo, Ask, Aol Search etc., can be a good example. In most cases, there is no more need to go and search for the right book in library or a book shop and browse it's contents for some kind of information. Just send a request to a search engine and get information in some seconds. Also search engines are used by companies, who want to be in top of search results and get clients and popularity. For me it is really hard to imagine life without Google nowadays.
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