Dwight Silverman, tech writer/blogger at the Houston Chronicle, explains it best:
Now, IE6 wasn’t a particularly great browser when it launched in 2001, and at this point it’s a positively awful one. It doesn’t fully support many of the best ways Web designers build sites and browser-based applications, and it’s prone to security issues. It doesn’t, for example, offer any protection against phishing scams, in which users are tricked into going to a malicious Web site.
Web developers would love to quit supporting it on their sites,. But that 17 percent usage rate is a problem. They have to spend time and resources tweaking their sites so they work with IE6, just because so many people are still using it…
[snip]
Web developers are starting to rebel, opting to no longer ensure that IE6 will work with their sites. And it’s not just small, out-of-the-way corners of the Web — YouTube recently began warning IE6 users that they need to upgrade if they want to continue using that wildly popular video-sharing site in a glitch-free manner.
IE6 delenda est
Dwight Silverman, tech writer/blogger at the Houston Chronicle, explains it best:
I’m totally on board that bandwagon.