Ad blockers don’t just block ads on the internet – they actually break websites such as British Airways and Vodafone, a new study has found. According to tests conducted on the UK’s 100 most popular websites, ad blockers didn’t just block pop-ups, but accidentally corrupted useful parts of a website, such as an airline check-in screens or retail order tracking pages. If you were browsing, all you would see is an error message or simply a chunk missing on screen, but no explanation for what was behind it. In the study by London ad-tech company Oriel, the researchers tested 24 common ad blockers, including Adblock, Adblock Plus and uBlock Origin,…