(Similar to blackmail) When a business (usually a website) ensures your continued patronage by automatically making your private dealings and information public if you don't regularly use their services (visit their website) to tell them not to.
Social Network websites bluemail you by regularly changing their services and reset privacy settings making all private information and posts public. You then have to revisit them to use their services to be able to change the privacy settings back.
by Thirdofherne November 10, 2013