No obligation at all! No kidding. Absolutely free! Every now and then when I'm bored, I surf the net and come across coupons or free offers. Just samples of new products. All you have to do is put in your name and address. Sometimes I forget that I signed up for it and weeks later, I receive something in the mail. It truly is amazing.
I've gotten makeup, magazines, drinks, household products, etc. There are definitely some sites that say free but you pay for shipping/handling. No way am I talking about that.