Privacy Both for security reasons and in order to build customer profiles, many websites require users to become members. On the membership application, such websites may ask applicants if they are married, how many children they have, their profession, and even their annual salary.
為了安全控管及建立客戶檔案等理由，目前購物網站多採會員制，填寫會員資料時，有些網站會問及有關婚姻狀況、子女數、工作性質，甚至家庭年收入等額外問題。