When I see other people's computers as they browse the internet, I'm shocked at all the crap they have to see on every website! Ghostery blocks all of it. Found out about this wonderful extension when I was looking for an answer to a computer problem. The forum I was in was way above my level of understanding, but someone mentioned Ghostery. I started using it and then recommended it to my computer guy, who uses it now, too! Been a user for >10 years.