Yes, Poland has one of the highest percentages of ad blocking users in the world. Historically it was also a bastion of Firefox - in pre-Chrome days it has had

Yes, Poland has one of the highest percentages of ad blocking users in the world. Historically it was also a bastion of Firefox - in pre-Chrome days it has had >50% market penetration, and Opera was also widely popular compared to other countries, AFAIR peaking at ~15% (ironically, even when it had a paid and ad-supported versions, many users were using the ad-supported Opera). Even now Firefox has 15% market share in Poland vs ~5% globally. I don't know if it's related or has a common cause, but this just higlights that some local markets can be very specific. Edit: January stats for desktop browsers: Chrome 50.52%, Firefox 31.02%, Opera 7.30%, Edge 4.66%, IE 4.15% Overall stats (incl. mobile devices): Mobile Chrome 33.69%, Desktop Chrome 26.16%, Firefox 14.94%, Safari Mobile 5.80%, Samsung Browser 4.87%