LINK：
百度：link不是查找网站的反向链接，如link:www.i5up.com ,并不是查找www.i5up.com这个网站的反向链接，而有些朋友说在百度搜索框里输入link:www.i5up.com却有结果，那其实只不过是把"link:www.i5up.com"当做一个普通关键词来搜索罢了。
google:link用于查找网站的反向链接，如link:www.i5up.com就是查找www.i5up.com的反向链接，但有些朋友问到为什么在google搜索框里输入link:www.i5up.com结果却那么少，其实不是的，你去google管理员工具里去查一下你才知道自己网站反向链在google上是多少
yahoo:link查找的是反向链接，只不过与要加一个http://，如link:http://www.i5up.com DOMAIN：
百度：domain:www.i5up.com是查找网站的反向链接，也可以这样解释，就是查找关键词www.i5up.com的搜索结果，如domain:xxx指的是包含所有xxx网页，与直接搜索xxx的结果差不多。
google:domain:www.i5up.com没有什么意义，只是普通搜索
yahoo:与site一样，查找该域名下所有收录网页
建议：要看一个网站的反向链接的多少，看yahoo的反向链接数量是最直接的，它表现得最全，我一般都是以yahoo作为标准的.
LINK:
Baidu: link is not a Web site to find the reverse link, such as the link: www.i5up.com, is not to find the site www.i5up.com the reverse link, and some friends in the Baidu search box enter link: www.i5up . com The results are, in fact it is only the "link: www.i5up.com" as a general keywords to search for it.
google: link for the site to find the reverse link, such as the link: www.i5up.com is www.i5up.com find the reverse link, but some friends asked why the google search box enter link: www.i5up. com but so few, in fact, No, you go to google search tool for administrators to know your own Web site back in the chain is the number of google
yahoo: link is to find the reverse link, but with an increase to http://, such as the link: http://www.i5up.com DOMAIN:
Baidu: domain: www.i5up.com is a Web site to find the reverse link can also be interpreted in such a way that www.i5up.com keywords to find the search results, such as domain: xxx refers to the page that contains all the xxx, with the direct search xxx the result of almost.
google: domain: www.i5up.com meaningless, just an ordinary search
yahoo: with the site, to find the names of all pages included
: A look at the site of the number of reverse link to see the reverse of the yahoo link is the number of the most direct, it was the most full, I generally yahoo as a standard.
Baidu: link is not a Web site to find the reverse link, such as the link: www.i5up.com, is not to find the site www.i5up.com the reverse link, and some friends in the Baidu search box enter link: www.i5up . com The results are, in fact it is only the "link: www.i5up.com" as a general keywords to search for it.
google: link for the site to find the reverse link, such as the link: www.i5up.com is www.i5up.com find the reverse link, but some friends asked why the google search box enter link: www.i5up. com but so few, in fact, No, you go to google search tool for administrators to know your own Web site back in the chain is the number of google
yahoo: link is to find the reverse link, but with an increase to http://, such as the link: http://www.i5up.com DOMAIN:
Baidu: domain: www.i5up.com is a Web site to find the reverse link can also be interpreted in such a way that www.i5up.com keywords to find the search results, such as domain: xxx refers to the page that contains all the xxx, with the direct search xxx the result of almost.
google: domain: www.i5up.com meaningless, just an ordinary search
yahoo: with the site, to find the names of all pages included
: A look at the site of the number of reverse link to see the reverse of the yahoo link is the number of the most direct, it was the most full, I generally yahoo as a standard.
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