一款不错的机器人程序，是一款蜘蛛程序，能够抓取关键词和描述-Googlebot finds and indexes the web through hyperlinks. It still goes to the new pages through hyperlinks in the old sites. My searchbot (Xearchbot) can find sites and stores its URL, title, keywords metatag and descr iption metatag in database. In the future, it will store the body of the document converted to plain text. I don t calculate PageRank, because it is very time-consuming.