UPDATE: Sorry, this offer is dead!
Quest Bar is offering 2 FREE Protein Bar Samples when you “like” them on Facebook, click the ‘Free Samples’ tab, click the green ‘Claim Coupon’ button and allow access to your profile… make sure you un-check the ‘Share on Wall’ box if you don’t want to annoy your friends!
Also, don’t forget you are able to remove anyone from having access to your profile by reading How To Remove Company Applications from Accessing your Profile on Facebook?.