A few months ago, my wife was shopping online for a gourmet food item as a housewarming gift. She entered her email address as part of the order process so that she would receive a confirmation that the gift had shipped.
The next week, my wife received an email from this store about their specialty cheeses. The next week the store sent an email about cooking sauces. She continued to receive one or two emails a week from this shop even though she made no further purchases. After a couple of months, she tired of the constant....