For our app I've been monitoring IE8 usage for the last month. It is almost exactly one-for-one with XP users (YES!) and dropping a little at a time every day.

For our app I've been monitoring IE8 usage for the last month. It is almost exactly one-for-one with XP users (YES!) and dropping a little at a time every day. When I first started looking the rolling 30 day average was roughly 15%. It has since dropped below 12%. I would imagine by the end of the year and a wonderful rash of XP viruses and worms, a lot of our customers will have had to drop both of them.