SEO中文网站

http://www.allno1.com/google_serp/mu...nk_checker.asp - A nice worldwide SERP checker.(一个全球好用的SERP检查工具)

http://www.checkpagerank.net/ - Nice PR checker and validator when exchanging/purchasing links(pr值检查器)

http://www.iwebtool.com/backlink_checker - Nice but limited way to see what sites link to you and their associated PR's.(这种看什么站点与你们以及他们相连的的PR连接的方式好，但也有限)

http://www.copyscape.com/ - Check to see who is copying your stuff and take action.(检查谁复制你的内容和采取投诉)

https://adwords.google.com/select/Tr...timatorSandbox - Nice traffic estimator. Type in the keywords you want to estimate, maximize your budget and you'll see what Google sees as potential traffic. Usually used for Adwords but nice to use for estimating niche markets for website development.(流量估算,输入要估算的关键字,最大程度提高你的估算,通常采用的AdWords，但使用的一些估计为其网站发展)

http://collinlahay.com/2007/11/16/un...and-gov-links/ - Nice article on link development for any niche.(网站文章的链接的检查)

http://seodigger.com/ - Gives a search estimate for specific keywords to your niche at different SERP standings. Nice.(为具体关键字做出的搜索概算在不同的SERP积分情况)

http://www.ksl-consulting.co.uk/google_penalty.html - Good list of things to be careful about so you don't get a Google penalty.(检查网站谷歌处罚)

http://searchenginewatch.com/2175271 - Article on creating an RSS feed for your site.(为你的网站建立一个免费的RSS)

http://www.diagnosticoweb.com/ - Good all around site tool.(谷歌各种工具集合)