In my day to day I try to support IE6, 70% is huge when you read that article, of businesses that use XP still…
IE6 is just terrible (charles barkley voice)
Having a sweet reset usually addresses a lot of the issues with IE6 understanding of CSS, but double left margin, and other quarks just erk me to no end.
Death to IE6 in 2020. Let’s hope someone creates a helpful virus that wipes IE6 out completely from all XP computers in 2010 
~ Chris