As someone who runs blog PR campaigns, I am constantly needing to check the Google Page Ranks for one blog after another. Until this Google Chrome extension was introduced, I had to plug the URLs into PR Checker and then type in the "anti-bot code" to prove that I was a human being. Now that I have installed the SEO Status Pagerank/Alexa Toolbar for Google Chrome, I need only look at the upper right corner of my browser to see what Page Rank the site I am viewing has. I am not even required to click anything.
If you have Google Chrome and would like to install this extension, the process could not be easier. Just go to this page under Google Chrome Extensions and click the "Install" button. It takes a few seconds to download (if you have a high speed connection). Then you're done!