https://www.marlboro.com -login or register and check your offers. If there are any left, and if you qualify, it will be listed there. It’s for the first 800 every day at 4PM eastern until 5/22
http://fit.makeitmio.com/ -you have to tweet to get it. –UPDATE-this is still available if you didn’t get it yet.
http://www.questproteinbar.com/HungryGirl/? -click the try 2 bars button
http://www.crackerjackd.com/ -first 1,000 daily through July 1. -Update-all gone for today, it seems to reset at a different time daily. Scroll down and click the free cracker jack’d box
http://www.startsampling.com/sm/102785/captureAddress.iphtml -Arizona California Colorado Delaware District of Columbia Idaho Illinois Maryland Montana Nevada New Mexico Oregon Texas Virginia Washington and Wyoming only