[mcav]

It all depends on how much work goes into supporting IE6. If the amount of time is substantial, personally I would consider dropping it. But even until the bitter end, that decision depends on your target audience and how much you want that group to be forced to make a choice: upgrade or leave your site.

That's for functionality. I think we're long past the stage where you should care whether or not IE6 gets the same exact _visual_ experience.