IE6 is a bad browser. It thumbs it's nose at standards, IE5/6 may have slowed down the development of ther internet as an application platform by 2 years in my opinion. So may developers spending extra time to make an app cross browser. I know I have spend how too much time having to turn standards compliant markup into IE compliant markup. But in IE8, they have plans to be standards compliant, as <a href='http://arstechnica.com/articles/paedia/ie8-super-standards-mode.ars'>here</a>.<br />
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But it creates a very bad problem for them, how to be backwards compatible to stuff that worked in IE5/6 and even 7, while being web standards compliant. I guess they have this rendering mode thing.<br />
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So what's the point, I think the point is, that it's almost always not worth cutting corners, because it really comes back to bite you.