even easier, you can sign up for the daily email and almost everyday you'll find in your inbox a list of great free samples. for instance, today i signed up to receive a free sample of a mr. clean magic eraser, a special kind of paint that you can paint on any surface to turn it into a white board (like chalkboard paint!), and a free year's subscription to metropolitan home magazine!
it almost sounds too good to be true, but i've been doing it for a while now, and so far i've received most of the things i've signed up for. (i don't keep track of the samples i sign up for so i'm not exactly sure about missing any.) but my favorite is the magazines! so far i've received multiple copies of: body + soul, martha stewart living, woman's day, parents, popular photography, prevention, and i think a couple of others that i'm forgetting.
try it out if you like!
(p.s., sometimes they ask you to fill out a short survey and/or enter a friend's email address. as far as i know, they've never contacted the friends i've referred, and the surveys are really simple.)