I used to grab the latest PDF magazines from a couple of file sharing sites. They've since disappeared or gone paid membership only. I've just stumbled into this one ( http://www.rlslog.net/category/ebooks/magazines/ ) and am busy catching up on what I've missed during the past few months. It appears that users can mirror the uploads and boy do they ever. I've found that SupraFiles seems to have no limit as I've easily downloaded 20 magazines in the past couple of hours (I read a LOT). This is a great way to get the latest computer mags (Maximum PC and computer Power User are the best) and keep up with the 3D graphics field.
Have fun!