BTW, Toasy? Remember that chart you posted? According to that, 30% of users are NOT running IE. Linux users CAN'T run IE- Mac users have Safari. AOL users have their browser (Based on Netscape, isn't it?). Older Mac users are stuck with IE (OS 9 and 10.0/10.1- OS 9 you can download Netscape, but the Mac edition is crap, and all the new browsers are for OS 10. Some of the browsers work on 10.1, but the majority of the browsers only work on 10.2 or above, so 10.0 and 10.1 users are stuck with IE).
Do you really want to lock out 30% of the world from viewing your web page by writing it sloppily (so only IE can read it)?