Reports of the death of Microsoft Internet Explorer 6 (aka Satan’s Browser) may have been greatly exaggerated.

Today was supposed to be a great day for the Web. As of March 1, 2010, Google will no longer support Microsoft’s Internet Explorer 6 browser—a decade-old dinosaur engineered to navigate the Web as it existed in the year 2000. Why would this be cause for celebration? Because IE6 is barely capable of navigating the modern Web and a total nightmare to build sites, services and applications for.

But ten years after its release, it’s still being used by an estimated 20% of surfers. And while Google’s move is one in the right direction, I’m not breaking out the whiskey and noisemakers for IE6’s funereal wake quite yet. Sadly, IE6 isn’t going away for good anytime soon.

Those unfamiliar with the Internet Explorer 6 saga might be wondering what the big deal is. How could the life or death of one browser be so critical to the future of our increasingly Internet-based lives? When compared to browsers of today, IE6 is a standards-incompliant antique. It debuted during a dark, dark period in Web history; In the summer of 2001, Microsoft had soundly beaten Netscape into submission for a 90% lock on the browser market and was in the uniquely powerful position to decide which Web standards it would ignore, which it would integrate, which it would halfway adopt and which it would simply make up. And IE6 is the bastard child of this hubris. It doesn’t behave like any other browser on the market because it doesn’t interpret Cascading Style Sheets or JavaScript according to the universal standards set by organizations like the W3C. I’ve heard of developers spending anywhere between 20% and 50% of their time on a project making a site work in Internet Explorer 6. I know of many others who simply chop out advanced features, enhanced interactivity and slick design elements altogether, just so their work doesn’t “break” in IE6.

Why do they bother? Because nearly a decade after it shipped with Windows XP, IE6 still commands a mind-blowing 20% market share for browsers, according to the most recent statistics compiled by NetMarketShare. That’s more than double the shares of Chrome and Safari combined, and just shy of Firefox’s 24% piece of the pie. And that’s only Internet Explorer 6. Combined with its better-behaving but by no means perfect descendants, IE7 and IE8, Internet Explorer as a whole owns 62% of the browser market. Now, browser market share is not an exact science and the numbers vary widely from site to site and country to country, but you get the picture.