Have you ever wondered.....

Have you ever wondered how retailers(shops) like Target and Tesco send you coupons that you really need? Are they magicians? How did they figure this out! The truth was.... when you make membership card of that shop, they collect your personal information like name, age and gender. Every time you use the card, what you bought will be recorded down and will be saved to their data. They figure out what you'll need and what your interests are and recommend you products that you might like by sending you coupons. There was an incident where a sixteen year old girl was pregnant and even before she told her parents about it, she started getting coupons for diapers and products that a pregnant women might buy. When her parents found out about this, they went to complain to Target about getting these coupons. Few weeks later, she told her parents and her parents had to apologise to Target. It is very interesting but we always need to be careful in handling our personal information as they can be used in crimes and other negative purposes.