none. as far as I can tell, the sort of thing I'm interested in is delivered faster, better, and in a more convenient format for free here online. I occasionally read the IEEE "computer" publications my girl leaves laying about the house, but those are mostly about things I don't care much about. Occasionally they talk about new networking tech.
Paper is just so hard to deal with. I mean, I keep books, but periodicals are somehow more... disposable?