Professional SEO Extension. This is what top SEOs use to evaluate clients and competitors sites. Features NO OTHER SEO EXTENSION HAS! Data included provided by the Authorities like Google, Bing, MajesticSEO, SEMrush, Alexa, Archive.org, Facebook, Twitter. Learn valuable information about a website's SEO, SEM Social Media and Website Metrix.Key Categories Analysed are: 1. Website Back-links - Powered my MajesticSEO, Bing & Alexa; 2. Social Media Activity - Checking Facebook, Google+ , Dmoz, Twitter, StumbleUpon; 3. Website Traffic - Powered by SEMRush & Alexa; 4. Indexed Webpages - Checking Google, MajesticSEO and Bing; 5. Website History - First time cached online by Archive.org and Last time cached by Google; 6. Website Checklist - Checks presense of Robots.txt and Sitemap.xml files; 7. Domain Data - Whois Data and IP address of Website. NoFollow Bonus Box - No-Follow Link Checker that Highlights any No-Follow Links in Blue TABS. Traffic Value - Traffic and Value $ coming to the Website. Dropped Links - Links that have broken within the LAST 30 days. Anchor Text - See how the websites links are written/coded. Anchor Text Chart - Displays a Pie Chart based on linking percentages.