Gourmet popcorn and snack sellers give away $50 certificates toward the store every month.

Premium-chocolate retailer gives away free chocolate monthly to entrants who can solve a series of brain teasers.

Register with company to win free coffee, given away monthly, in return for emailing their specials.

Look here to translate the codes from under bottle caps or game pieces into points, which can be used to redeem cool prizes.

Answer ten questions correctly from a database of questions relative to the fields of biology, biochemistry and genetics.