THESE FREE GIFT CARDS ARE NOT FREE

 You receive an email to participate in a survey.  All you need to do is sign up and participate and you will get a $50.00 gift card.  DON'T DO IT.  Even if the email comes from a friend, it's a scam.  Just delete the email.  They are looking for email addresses that they can sell.

This is called fishing.  They cast a line out looking for email addresses.  They hook your email address when you respond and then they add you to their mailing list.  Or they add you to a list and then sell the list to other scammers.

Another method is to send you a spam email with a link to "unsubscribe."  But when you unsubscribe, you really get added to other lists.

Just delete and move on.