Ghostery is your window into the invisible web - tags, web bugs, pixels and beacons that are included on web pages in order to get an idea of your online behavior. Ghostery tracks over 1,000 trackers and gives you a roll-call of the ad networks, behavioral data providers, web publishers, and other companies interested in your activity. Choose to block - or not. You get control at a company level - are there some marketers you trust, but others you'd rather turn away? Ghostery lets you open the valve of your web behavior as wide or as narrow as you'd prefer.