Definition: Search engines usually do not just wait for Webmasters to register their websites with the engine. Most employ some sort of automatic programs to crawl the Web and index all the pages they find. Some search engines refer to them as spiders, but Google indexes the web with "Googlebots." The word is a combination of the words Google and robot.
You can find the last time the Googlebot visited your Web site with Google Tools for Webmasters.
