[jerf]

Opera doesn't have the other concerns raised here. They aren't vendors of anything else themselves, and have no particular reason to use their data to further other goals they may have.

The question of whether this technically "works" is uninteresting. The answer is yes.

[rapind]

Opera inserts ads via this proxy. They bought AdMarvel last year. I'd say that's a good reason to check out your data.

http://www.admarvel.com/OMAE.html

[jerf]

Oh dear. I'm surprised someone hasn't had a major-league lawyers-involved hissy fit about this. Thanks for the info!

[lukeschlather]

I would worry about Opera precisely because they aren't vendors of anything else themselves. Amazon can run these servers just to increase the cachet of the tablets they sell.

Opera needs to make sure that the servers they're running are bringing in income.