SEO optimization must be necessary. Major search engine keyword Data reference URL _ website operation

Check PR (pr of Google 72 different servers):
http://livepr.raketforskning.com/

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Baidu Related search:
Compare search times for related keywords
http://d.baidu.com/rs.php

Ggoogle's keyword Tools
Https://adwords.google.com/select/KeywordToolExternal

Google Trends: Keyword search volume statistics
Count the number of keyword searches in different time periods and draw graphs.
Http://www.google.com/trends

Google Analytics
Google's free analytics service. Provide a lot of professional reports on marketing and content optimization. It's a great help to search engine marketing.
http://www.google.com/analytics/zh-CN/

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Optimization prerequisites. Search engine keyword Data reference in the production site, first of all to analyze your users and the market, so as to be more conducive to your site in the Search engine optimization, the following is some search engine keyword list of reference data.

A search (Yahoo CN)
Search the list of key words
Http://www.yisou.com/top_index.html

Sohu (SOHU)
Sohu keyword search list
Http://zt.search.sohu.com/topsearch/index.html

NetEase (163.COM)
NetEase Search List
Http://so.163.com/list.htm
Search engine keyword searching list

Baidu Search the list of the clouds
Http://top.baidu.com

Baidu Index:
http://index.baidu.com/

Yahoo Search list
Http://misc.yahoo.com.cn/top_index.html

Sogou Index
Http://www.sogou.com/top/index.html

Search the list
Http://www.zhongsou.com/zs_phb/html_top/index.htm

Search Billboard:
Http://www.soso.com/lhb/s_i_sosolhb.shtml

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Keyword Search can help you choose keywords, avoid the fierce competition, a way out.
1, Baidu search keyword search frequency query
http://www2.baidu.com/inquire/dsquery.php

2, netease search keyword search times and price inquiries
http://adpsearch.163.com/find_price.php

3, Sohu Search keywords search number/category fixed sort quote query
Http://db.sohu.com/regurl/pv_price/query_consumer.asp

4, Sina search Key Words price inquiry
http://chaxun.sina.com.cn/

5, inquires the network real name registration situation and 3721 searches the rank price
http://www.3721.com/buy/