I also use Opera regularly - it's my main browser on my computer and my phone. I've been using it since the 90s, and actually paid for it back when it displayed an ad for free users! It just has so many useful little extra features, and I generally trust them not to use my data for nefarious purposes.

If this happens--and I've seen nothing as yet to suggest it's anything other than a rumour to get the pageviews up on certain tech blogs--I'll be uninstalling it after nearly fifteen years of use, and probably making the move to Firefox. I don't have a Facebook account, so why would I want to use a Facebook browser? Instead of just tracking me across Like-enabled sites, it'll be able to follow me around the whole internet, logging goodness knows what.

I seem to remember a social networking browser was tried out before, as a forked Firefox and subsequently Chromium, in Flock. Whatever happened to Flock?

I paid for Opera years ago, and I'd actually pay real money again for a good quality, feature-filled browser that was guaranteed to not include tracking. I'd rather pay with my money than my privacy. Money can always be replaced, and earned again. Once privacy's gone, it's gone.