It seems that the search engine enters the age of development to the professional direction.
The initial domestic relatively early search engine, such as searchably (there may be many people have never heard of it), the Arctic stars (now there are too many appearances), etc., generally some sites for hand-to-access databases. Later, it was a network spider to crawling everywhere, and the number of search web pages has increasing and higher quality. Probably you can search for all other types of files, such as pictures, music, flash, ppt, doc, and more.
Today, it should be said that the search engine begins to develop in the direction of specialization. Google's first day launched a special academic search engine
Http://scholar.google.com. 8848.com once disappeared, and launched a professional shopping search engine. Recently, the United States Koders Inc has launched its own source search engine.
Http://www.koders.com. I want a lot of companies or research units that are also developing their professional search engines, such as developing medical search engines, travel search engines, talent search engines, and more.
It is not difficult to see the development direction of the search engine industry in the next few years - specialization.
