You can get a coupon for a FREE can of Pringles Extreme via a Facebook application. This does request access to your Facebook profile so you will want to remove the application after you request the sample by going to Account>Application Settings>Delete the specified app (just click the x button). Allow 6-8 weeks for delivery.
Thanks, Free Sample Freak!
While you are over at Facebook, I would love you to join the Bargain Briana fan page!