I found the explanation on Ghostery's own site a bit clearer/more informative in terms of what data they actually collect, and what they do with it for profit:

I found the explanation on Ghostery's own site a bit clearer/more informative in terms of what data they actually collect, and what they do with it for profit: http://purplebox.ghostery.com/?p=1016020665 http://purplebox.ghostery.com/?p=1016020665