PCMag: “Real ads from legitimate companies are annoying on their own, but some online advertisements can be downright dangerous. For example, you may have encountered malicious scareware ads that look like antivirus alerts. Other ads impersonate law enforcement and demand hefty fines. You should also want advertisers to know less about you. Ad blockers not only drastically reduce the ads you encounter online, but they also prevent advertisers from tracking your online activities. The best news? All of the ad blockers on this list are free. Read on to find out which extensions we recommend and how to choose the right one…”