Has anyone heard about Lightbeam?

I used it with firefox in my ubuntu days, before I went fully free. The program itself doesn't really have a place in the fsc because it tracks you to map out who is tracking you. Complex little web maps they make of advertising agencies usually with google and facebook as main focal points. Interesting yet overall I found it useless because it wasn't telling me anything I didn't already know. They essentially state on their website that they are trying to track who's tracking you and ask for you to donate your history to them so they can use your data to construct more complex maps for their own use, which I'm not really cool with. So to answer your question I have heard of it, I have used it, I overall would not recommend it and no I do not know of an equivalent program that works with abroswer.