Introduction - If you have any usage issues, please Google them yourself
When the "spider" program appears, in the modern sense of the search engine before emerging. It is actually a computer "robot" (Computer Robot), a computer "robot" means a man can not reach the speed of uninterrupted software program to perform a task. As dedicated to retrieving information "robot" program like spider crawling across the network, and repeatedly, tireless. Therefore, the search engine "robot" program is called "spider" program.