I was using Opera extensively for the past year - then recently it started nagging me to turn on Turbo (which allows Opera to track your traffic), so when I switched systems I didn't install it on the new one - just FireFox and IE9. Although there are features of Opera I miss, I like the various privacy plugins available on Firefox a hell of a lot more than what passes for an equivalent on Opera. Although there a lots of Opera features I like, it just seemed that suck was increasingly creeping into it. I kept feeling like Opera had begun presenting popups to get me to change my settings.