If I recall correctly, at least one company (Euclid Analytics) tracks you around places even when you are not connected to the network, and instructs you to opt

If I recall correctly, at least one company (Euclid Analytics) tracks you around places even when you are not connected to the network, and instructs you to opt out if you don't like it. Speaking of, http://euclidanalytics.com/privacy/ http://euclidanalytics.com/privacy/ and https://signup.euclidelements.com/optout https://signup.euclidelements.com/optout So yes. Turn it all the way off.