Rated 3 out of 5 stars

Seems to work as advertised, but lacks two obvious and important features:
* Need to be able to exempt a list of sites (such as banks and some newspapers, which functionally disable their sites if you don't display their web bugs - for now I have to manually turn Ghostery off when visiting those sites)
* Need to be compatible with Thunderbird (since viewing RSS pages or HTML e-mails in TB triggers web bugs)

This review is for a previous version of the add-on (2.0.1).