I have a lot of downloaded mp3s that I've never heard, a pile of CD-Rs that I still haven't gotten around to completely, I scope out stuff here, and a few friends that say "DUDE, LISTEN!" on regular basis. Maybe an hour a week, but then some random nights a few times a year I go on a mad rush of unheard shit. I find it most hilarious when I pull a Keanu-esque "...whoa" at something that I've literally been sitting on for 5 years. That happened with Pagan Altar and Upwards of Endtime for me, probably a few others.
I'm trying to spend more time dedicated to my actual collection these days. I still listen to new shit, but I'm not trying to add to any of my three piles right now.