Vocalpoint is a free word-of-mouth program that allows you to sample new products. The best part about this program is that they'll occasionally send you little surprises in the mail!
Last month I received a great sample of a new Kashi cereal along with high-value coupons for me to use and extras to pass along to others.
Vocalpoint is a great program; you just sign up and wait for the freebies to come to you! I've been a member for at least two years, and I've received everything from snacks to hair products.