Rated 5 out of 5 stars
I love Ghostery. I was surprised, and frightened by the sheer volume of trackers being used on some sites out there. It's true that most of them are just ad networks, but the simple fact that so many trackers exist should give pause for even basic web users to consider using Ghostery -- just to see the enormous footprint you make as you travel around the web.
I only block a handful of the trackers, but I like the way Ghostery lets you pause the blocking and add specific trackers or websites.
Thanks to the ghostery devs... i can distinguish the sites just running ads, and the sites who seem to follow my every key and click.