Things Search Engine Developer Do

Humans Are Smart—Computers Aren’t
To bring great results search engine need to combine the speed of machines and the intelligence of human mind, to find exactly the right document in the blink of an eye.
Two things search engine developer do

• First, combine results from several sources and get you the best results.
• Second, structure the ranking algorithms to integrate “votes” from human beings, which can be done in a variety of ways. Count inbound links from other websites, is a way of measuring how many votes a site has from human and webmasters, how many users click through  your site and how long they stay.

Social bookmarking sites, collaborative tagging and comparing a person’s current and past searches are forms of artificial intelligence intended to improve the search experience. Entire web search process is text-based, search engines care about how much text you have on your site, how it’s formatted and what it says.