Tech companies and advertisers want your email address. Don’t give it to them. A recent article in the New York Times likens your email address to a “digital breadcrumb” and advises you to keep that crumb to yourself. As one advertising executive said to the Times, “I can take your email address and find data you may not have even realized you’ve given to a brand. … The amount of data that is out there on us as consumers is literally shocking.”