Buy any game on the GOG and get the Witcher as a gift!

Once thanks to a post about free Torchlight registered on the GOG . I also liked the position of the store: DRM-free.
From time to time I watch sales and bought or received several games for free.
Well, now I share the news that you can get the legendary first witcher for free if you buy any game. Also, nothing prevents you from giving a promo code to a friend if you already have a witcher.