I have the same issue on my Mac, but only for brands A to O.
I understand running a site like this is expensive and someone needs to pay for it, so some form of advertising is necessary, but the Hublot ad is quite overbearing and has affected my enjoyment of using this site. I understand it is up to me whether I visit PuristS or not. I have really enjoyed visiting PuristSPro over the years and have learned a lot here, I therefore feel a certain degree of sadness that I started visiting the site less because of the ads. I have no doubt that those that give up their valuable time for free to run the site feel this has been a necessary change, I just think it is a real shame.