I basically use Firefox and sporadically use Internet Explorar when I am multitasking and checking my windows live mail. What I miss in IE is an inbuilt spell checker. I even downloaded a spellchecker plug in called iSpell which works manually and a bit cumbersome. Recently I have upgraded to IE8, and thought that it would have this feature. But sadly IE has still a long way to go comparing to Firefox and Safari in this regards.