EDIT: Looks like most of the freebies are gone, but I'd still sign up with their site so that you can get the next round of samples.
Well this site is certainly new to me. Pinch.me is trying to get in the freebie scene and are offering free Honey Bunches of Oats greek cereal to get us hooked. I was able to add the cereal plus some free Beanfields pico de gallo bean & rice chips to my sample box as well! Although to be honest they could have offered a a bunch of free oats and I still would have signed up.
The only downside is you need a phone number to properly sign up for this site. They want to verify that you're a real person (and also that you'll only request one sample box) so they send you a code via text message.