How to get M.A.C lipsticks for free!

It has come to my attention that not everyone knows about M.A.C Cosmetic's Back to M.A.C program.  This is crazy talk because it means that you are missing out on FREE MAKEUP!!!  Here's how it works: simply collect six of your empty containers from M.A.C (the plastic or glass NOT the outer cardboard part) and turn them into M.A.C.  In return they will let you choose one free lipstick.  Pretty amazing right?!  Why would they do this, you ask?  It's simple, M.A.C has made it their mission to be environmentally conscious.  Because of this, they wanted to give costumers an incentive to recycle and Back to M.A.C was born.  Since lipstick was the first product developed by M.A.C, it only seemed fitting.  There is only one exception: Viva Glam.  Viva Glam is the charity line of lipsticks and glosses developed to raise money for the M.A.C AIDS Fund or MAF.  The MAF gives money to organizations that deliver meals to terminally ill patients, stop transmission from mother to newborn child, do testing and so much more.  M.A.C really puts their money where your mouth is one this one: every penny, and I mean every penny you spend on Viva Glam goes towards the MAF.  Not 100% of profits, 100% period. End of story.  This is why they are not able to be obtained for free through Back to M.A.C, however you can turn them in for a free lipstick.  I have been hard-pressed to find a makeup line that gives back the way M.A.C does.  So go! Get your free lipsticks!
http://www.maccosmetics.com/giving_back/btm_return_packaging.tmpl