ErrorZilla is an excellent Firefox extension that gives the user a few more options when Firefox can't find a certain website or page.  Options include the simple yet previously absent feature "Try Again", the "Google Cache" and "Wayback" links for cached copies of the page (I'm waiting for the Coral links to come with the next version), and simple yet useful tools like "Ping", "Trace", and "Whois".  After installing it, I immediately used it several times.  Firefox sometimes doesn't find sites on the first try (it might be a problem with my network), so I clicked on "Try Again" and it worked.  Other times, the website wasn't found and the "Try Again" button didn't do anything, so I pinged the site and got no response.  In other words, the site was down.  So I clicked on "Google Cache" and was able to view a perfectly cached copy of the page. 

The plugin was designed by a guy who's website is notoriously unreliable and difficult to navigate through (who uses Google search when their website is powered by WordPress?).  His plugin is ironically useful for his own website. 

(via Download Squad) #technology