http://kleenex.com/SoftnessWorthSharing/ -their site is very slow -thanks sondra
http://www.nikwax.com/en-us/webquiz/index.php -take the quiz. You have to get the questions right, but you can take the quiz again. You can do the quiz every 3 months. These do take a while to come, but if you look on the What I Got page you’ll see that many people have been getting them for years now.