I have found that when checking out directories I'm potentially interested in submitting to, sites for marketing, etc., an element I always want to know is if the page is cached by Google. So, I copy the URL, open a new Firefox tab, type google.com, and enter the cache search for that URL. Then I have to close the browser tab, and head back to where I was before.
This is the reason for the
free Google Cache Checker extension for Firefox. The extension automatically checks visited pages to determine if the current page is Google cached. The result is immediately shown conveniently in the browser statusbar.
This extension is available exclusively from
Gadget Advisor.