Secret is having a promotion to make promote their new deodorant product and to make their name more well known. To do this, they are giving away free sample of their new Outlast Clear Gel deodorant. Not everyone will be getting one cause it looks as though they are just doing a screening process first. It will require you to link your Facebook in order to even access the form but they shouldn't be posting to FB for you. It's probably there just to prevent people from getting more than one sample.
