if the testing sites are indeed doing it then they are likely more efficient about it, trying to make money from selling the data they gather. Worst thing about them is they are completely unnecessary and pointless even if they were trying to help users with blockers. There is no point in testing your adblocker, just go to the sites you usually go and if you see ads then it doesnt work properly.
if those sites are gathering information about adblockers to find ways to make them not work, they are harmful.
Don’t most advertising sites already do that?
I always assumed that they did.
if the testing sites are indeed doing it then they are likely more efficient about it, trying to make money from selling the data they gather. Worst thing about them is they are completely unnecessary and pointless even if they were trying to help users with blockers. There is no point in testing your adblocker, just go to the sites you usually go and if you see ads then it doesnt work properly.