Normally I wouldn't respond directly to the list with something like this, but the answers may have some bearing on the Web Design thread as well. Where I work as Webmaster, they've standardized with IE in-house. Once I'd pointed this out to the higher-ups, my first job was to rework the entire site from scratch so it would be at least visible to the greatest number of people. Oh my yes.
Standardization is a godsend to designers.
If nothing else, it keeps us from having to learn a whole new subset of the HTML language. Because they scoff at puny standards. They're both ahead of the game, and so feel a need to individualize to make their browsers unique from the competition. I keep an eye toward backward compatibility.