SEOrush is a web app which can generate SEO results for your website (or any other website ) for free. All you have to do is type in the URL and SEOrush will give you a detailed SEO report of that website. You can get detailed site information, like domain name, whois record owner, site creation date etc. Information regarding how many pages are indexed with search engines like Google, Yahoo! and Live are also provided. The rank of your website according to Technorati, Alexa etc are also provided. Another useful information provided is the number of times your site has been linked or bookmarked in various social sites like Digg.com, Delicious, Reddit.com, Furl etc.
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