Thanks so much for being interested in the products on the site! How it works is when your profile matches what the brands are looking for, you receive an invite. If you haven't received an invite, then you may have to wait until the company wants you to try it. In the mean time, to increase your chances of getting an invite, be sure to fill out your profile as thoroughly as possible. Brands will have a better idea of who you are and that they want to send samples to you. Also, the more complete your profile and the more actions you take on the site, your Swag Rank increases, which greatly increases your chances of getting sample invites.