If you enjoy taking surveys and doing product reviews, Consumer Advisory Group has openings available for Women and Men. Make sure to use the appropriate link. When you join you will be entered in the sweepstakes and you will have the opportunity to earn individual gift cards too!
These opportunities are great little ways of earning gift cards. Many people use them to help supplement their income. I would recommend using a different email address then your normal one for this though, just in case you get a lot of emails. This is a legitimate company.