Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall
http://cn.alexa.com/
Through this site, can understand your site, in each country/region rankings and site average load time and traffic, and so on, while the Search keyword analysis, to understand which key words are influential. The most useful is to count the hits, it can make you know, Visitors are through which websites come to your site, that is, the upstream site! It is also after visiting your site, and to which some of the websites visited. That is, downstream site. This statistic function is not completely accurate, but it is very practical reference basis, to adjust the website promotion direction very helpful, also can discover many new website, Maybe it'll work for you. I often use this to query some of the competitor's website information, to find out where their click stream came from, which is very useful.
http://www.myip.cn/
This site can be analyzed in a comprehensive data, you can the site's title/description/keywords analysis, at the same time you can understand that your site has several internal chain, there are several outside the chain, you can view the PR value of the chain, as well as links to the site to check, to facilitate you to some dead chain or your site to remove links to the site for the investigation, It can also estimate your site, calculate how much your site is worth, hehe. Of course this function can only be right when it is entertainment, do not believe it. Speaking of this site the most practical features, I think it is more than it can let you know, your site is located in the server where the computer room, which has a total of several sites, what is the station. This feature is for some owners of leased virtual hosts, It is useful to know the host situation you are using. Other information about the domain name.
http://tool.admin5.com/
This is the old webmaster network to provide the relevant information query page, you can easily query search engines included with reverse link information, search keywords rankings and Web page code conversion, or a fairly practical tool site.
http://seo.chinaz.com/
Webmaster home to provide SEO Comprehensive query tool site, you can understand the site's keyword density, frequency, and the various keywords in Baidu and Google rankings and so on.
These are provided for the time being, later, I would like to add, this article hopes to help the novice, veteran please don't laugh, because know the above site too much too much, if you have any better tool site or software, welcome to add, also hope to post and share, resource exchange, common progress!