I don't often visit the Vox site, so I only become aware of the Questions of the Day when someone in my "neighbourhood" answers it. So I missed the QotD about what magazines you subscribe to, only noticing it a day or two later when reading Chris' post. I can't find a way to see old QotDs and click a simple 'Answer' button for them, but still...
I susbcribe to Sight & Sound and the London Review of Books. I swap the latter with my dad, who subscribes to the New York Review of Books, which means I spend most of my reading time reading lengthy reviews of books rather than the books themselves.
I also have a lifetime subscription to McSweeney's, although I'm woefully behind on my quirky American short-story reading and should either catch up or tell them that they should stop wasting their money on me.
I subscribed to The Believer for 12 months until March this year but it had gone drastically downhill since I read a few issues early on and it became a chore to get through it each month (other than Nick Hornby's accounts of what books he'd read or bought each month which was always a joy and which are collected together in a volume released next month and which I can recommend as a way to excite you about reading if you're feeling a bit jaded).