Luna is giving out a FREE LUNA Mash-Ups Bar through a Sponsored Ad on Facebook. There is no way to link directly to this because it's targeted. It has to pop up in your feed for you to be able to claim it. PLEASE NOTE: Try the following suggestions to possibly get the offer to show up in a day or so.
First, Click on FREEBIE LINK and like the Luna Facebook page then like a few of their posts. Next, search "Luna" on Google and scroll down through the results page for a few seconds. Also, search "Luna" on Facebook and do the same. Then, Close everything out then open Facebook and keep an eye on your newsfeed for the free sample offer post to show up Once you see it, click the "Get Offer" button and follow the steps to claim.
Available to US residents. SEE BELOW for the Screenshot as this is what the Sponsored ad should pop up look like.