Stack is a brilliant sounding thing - a site/service that curates magazines for you. They sell all sorts of interesting and obscure independent titles and you can sign up for a subscription where they'll send you a title every month. This is the sort of media curation all the pundits were predicting yonks ago but which only seems to be starting to emerge now. Lovely stuff. And it'll make a good Christmas gift for that hard-to-buy-for Art Director in your life.