It looks like the web browser that wouldn't die is finally on its last legs. While it's not quite dead yet (especially when you consider the worldwide usage figures), use of Internet Explorer 6 in the United States has now officially dropped below one percent for the first time, which is apparently good enough for Microsoft to do a bit of celebrating. It's now sending out shirts like the one above to select folks, who can now wear their disdain for the out-of-date browser. Those interested can find the latest worldwide numbers at the source links below.