Joy. Zeldman points out:
Whatever its failings, Netscape 4 made it easy to install digital certificates essential for encrypting sensitive data–which is one reason web pros in the cash-strapped public sector have been stuck with that browser since man first walked upright. Hark! Hope: CREN has partnered with Opera. Hence Opera 7 will include a group certificate signed by CREN, enabling libraries and universities to migrate from a 1997 browser to a modern one that supports standards. (Hat tip: Tanya.)
I don’t know if this will make a dent in the old NS4 install-base or not. But I sure hope so.