Limit your online presence

Yes, why do you have to subscribe to all the shit available online? Limit your presence of giving your information (even if is a fake/nym one) to useless shit you find online.

Stop participating in useless quiz, voting, petitions, polls, questionnaires. Or at least select them and try to use more those without giving an email address. If something is promoted as "free stuff" just submit your email here... that means in almost all cases: gathering user data. Free stuff is NEVER free.