The fact that it probably should be ticked by default is another issue. Or that there's an even an option... But thanks for pointing it out.
Of course, there are other reasons people prefer Opera. I did spend some weeks using Mozilla on Linux - it felt like a big step backwards, with so many two-key shortcuts that Opera does in one, and for the SDI* model that divides followers (Opera, as you know uses an MDI model).
It could be argued that non-free software helps make free software better. But I wasn't going to argue that; just mention that it could be argued.
FWIW, my online banking probably won't work with Moz - they explicitly say no support for Netscape 6[link|http://www.stgeorge.com.au/code/int_bank/about/supported_browsers.asp|on the page] and that would probably mean Moz, too. It doesn't work for Opera, but that's okay - I can and do use their telephone system instead. OTOH, I have emailed them asking them to please improve their standards compliance so that they won't have to be so fussy. I should email them again just so they know I'm still waiting.
Wade.
* I got it right this time, CRC!