They weren't on MSN, were they? :)
Microsoft's dominance in the browser market has seriously hurt the Web. Although they're not the first -- Netscape was doing the same thing in the beginning days. There are standards out there, and Mozilla and Opera meet those standards, but Internet Explorer is broken. Sometimes to do fancy stuff that works on IE designers forget the standards and write so that IE can understand the page, but that sometimes breaks those standards-compliant browsers.
Even Microsoft's IDE, Visual Studio.NET, is broken in its standards. The other day it told me that "min-width" in CSS was invalid. BS! It's perfectly valid, but VS.NET doesn't understand it, likely because it writes to IE and IE doesn't understand min-width and max-width.