IE 7.0 Technical Changes Leave Web Developers, Users in the Lurch: "My advice is simple: Boycott IE. It's a cancer on the Web that must be stopped. IE isn't secure and isn't standards-compliant, which makes it unworkable both for end users and Web content creators. Because of their user bases, however, Web developers are hamstrung into developing for IE at the expense of established standards that work well in all other browsers. You can turn the tide by demanding more from Microsoft and by using a better alternative Web browser. I recommend and use Mozilla Firefox, but Apple Safari (Macintosh only) and Opera 8 are both worth considering as well."
Surprisingly harsh for Paul Thurrott. BTW Firefox also doesn't pass Acid2.