I never see the ads on here, because I have Ad Filter on my desk top computer.
When I use my daughter's Desk computer at her house, the ads are all over the place making hard to focus on the topics.
Her lap top has the ads too, but she has Mozilla for her desk PC and Windows for the lap top but her Ad Filter is not downloaded.
I use Mozilla/Firefox for (3) years now and never have a problem yet *knock on wood* previously it was with Windows.