Google Chrome extensions are getting better and giving many choices for users as extensions developers are developing many useful tools for Google chrome browser. Ultimate Chrome Flag is an extension for Google chrome that shows all the information of the site like Geo location, IP address of the host, Google PageRank, Alexa rank and scorecards of WOT (Web of Trust).
For the people like SEO guy who like to see the Pagerank of the site, it has an option to show the Pagerank number with the flag. If you are Chrome use, you should check this Ultimate Chrome Flag out!