This explains how Target will have every customer obtain a "guest id#," to keep track of their customers spending habits. After analyzing all of their purchases from store to online, they decide what you like to buy, and when you like to buy it. Target is not the only business whose guilty of it; if you think about it every store that offers coupons, always sends them after you've already just purchased the item.
Switching my shopping habits around, has allowed my budget for most necessities to stay in tack. For example, grocery shopping online is the best, because it allows you to only buy what you need only. Some think they will miss something if they shop online, but everything you can purchase in the store is online, which prevents business from setting you up to buy more.