I have used both Opera & Firefox, and with both I can turn ads off or on. Firefox is 'easier' with the adblock filter... and one can 'whitelist' sites you don't mind. I have just done that with ChartBeat.

With Miro$soft and others trying every trick in the book to control what you see and feed you ads, and monitor your browsing, I feel NO compunction about using every trick *I* know to shut them out.

My favorite is the web filter, Promoxitron, which I have mentioned before.

Yes, it takes a little bit of work and time to get a modicum of control over things, but...OH, the relief!