Chapters Canada: Buy 3 Get 4th Free On Books And Magazines
There is no coupon needed for this in store only deal. You can find this deal at Chapters, Indigo, Coles, IndigoSpirit, World's Biggest Bookstore, Smithbooks and The Book Company. The free book or magazine will be the lowest price book. I've just picked up a free new books, but I'm definitely going to stock up on magazines for the long weekend!
Thanks Trun for posting this in the deals forum!