They say they don't keep shadow profiles of your external Web traffic [though I can't imagine that's true]. In line with other responses, I use a browser plugi

They say they don't keep shadow profiles of your external Web traffic [though I can't imagine that's true]. In line with other responses, I use a browser plugin that blocks all traffic to Facebook when I'm not on a facebook.com domain, and I exclusively sign in via incognito mode so the session is destroyed when I'm finished.