I agree with you but I think that you used the wrong term... "use" should probably be replaced with "be cataloged by"... for example they do face recognition on

I agree with you but I think that you used the wrong term... "use" should probably be replaced with "be cataloged by"... for example they do face recognition on all pictures, they harvest contact information from other people installing the FB app, they collect non-facebook browsing information using the "share to facebook" code that might get linked to your real identity somehow (third party sharing of information between companies?) even if you aren't "using" Facebook.