GMail and Blogger not usable on the iBook with IE

Since the iBook had IE 5.1 for Mac, it doesn't recognize the xhtml mime type: this is discussed in the Wikipedia and elsewhere but Gmail and Blogger seem to have issues with it still. User-agent code needs a brushing up, probably. Finally got the previous post's text uploaded thru Yahoo Mail, since the USB port was recessed and the mem-key was not able to go in without an extension cable.