Because by default IE8 will try to render sites in a standards-compliant way. If you designed your site to work around all the quirks, bugs and non-standard stu

Because by default IE8 will try to render sites in a standards-compliant way. If you designed your site to work around all the quirks, bugs and non-standard stuff in older versions of IE, then your site might not work properly in IE8 by default. This is a good thing because getting your code to be cross-browser compatible should be a lot easier now. Microsoft just does not want to leave behind all the people who worked hard to make their code work with their older, broken versions of IE. I'm no MS fanboy but it seems me that IE8 is going to be a pretty big improvement. I hope. :-)