I'm a bit baffled that automated ad blocker tests exist in the first place. Historically the main difficulty in writing an ad blocker are the rules. How are you going to accurately test these rules by ... testing if they match your imagined rules.<p>I guess there is always an opportunity to peddle a useless metric. If you actually wanted to do this right the obvious way would be manual review: pick X websites, visit them with each ad blocker, deduct points for visible ads and lost functionality. Repeat for each ad blocker, then rank them by score. That would also give you a nice score whether ad blockers or the advertising industry is currently "winning" the ad war