I have actively put down the ridiculous "industry standard" of using w3schools’ stats. People constantly use it to show that IE6 users are diminishing. If a HIGHLY tech savvy website is still getting 10% IE6 users, I can’t imagine how high that number will be on normal sites.
I think these stats are personally a waste of time, I think you should just look at your own website stats and then you can see what people are using for your website, and not just what everyone is using.
From that you can then pass judgement and see if you can drop the dreaded IE6, but if alot of users are using it then stick with it, whereas a good percentage may be using that browser across the web, but if those people aren’t going to your website, then it is less needed to accomodate.