HTTP請求 蜘蛛的 user-agent

百度爬蟲
* Baiduspider+(+http://www.baidu.com/search/spider.htm」)

google爬蟲
* Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)
* Googlebot/2.1 (+http://www.googlebot.com/bot.html)
* Googlebot/2.1 (+http://www.google.com/bot.html)

雅虎爬蟲（分別是雅虎中國和美國總部的爬蟲）
*Mozilla/5.0 (compatible; Yahoo! Slurp China; http://misc.yahoo.com.cn/help.html」)
*Mozilla/5.0 (compatible; Yahoo! Slurp; http://help.yahoo.com/help/us/ysearch/slurp」)

新浪愛問爬蟲
*iaskspider/2.0(+http://iask.com/help/help_index.html」)
*Mozilla/5.0 (compatible; iaskspider/1.0; MSIE 6.0)

搜狗爬蟲
*Sogou web spider/3.0(+http://www.sogou.com/docs/help/webmasters.htm#07″)
*Sogou Push Spider/3.0(+http://www.sogou.com/docs/help/webmasters.htm#07″)

網易爬蟲
*Mozilla/5.0 (compatible; YodaoBot/1.0; http://www.yodao.com/help/webmaster/spider/」; )

MSN爬蟲
*msnbot/1.0 (+http://search.msn.com/msnbot.htm」)