However, IE6 will only go away if we actively discourage its use. Do not go out of your way to support it. Do not allow it to suck more time and energy out of you. IE6 will continue to survive as long as its remaining users have no need to upgrade. When sites work, users don't see a problem.
Industries and corporations who use IE6 should not receive mercy: As it ages it will only become more of a burden. Corporations will one day eventually realize that the rest of the world has moved on, and they must invest time and energy into modernizing their own systems.
When the computers that run IE6 die, it will be too late.
Leave the poor, withered IE6 on the side of the road and let's move on. But don't kick it, beat it, and spit in its face, as the original "upgrade message" in this link did.