Lately I notice a marketing skills used by people in Internet, they will offer giveaway then later someone will be calling you to sign up for credit cards. Of course you will be notice that who you given out the numbers.
I think that is not right to do if they want to do it, they should inform you first. I know because one day I bought something from Internet and the girl got my number. Then a week later a girl call and she repeats call again and again tell me to sign up the credit card.
Anyone for such experienced?