We used to have piles of magazines around that no one had read but the people who wanted the subscriptions wouldn't allow to be recycled because they hadn't read them yet and they were going to get to them. When it came time to renew, I had to put my foot down and make them choose what they wanted and what they would keep up with.
Now the general rule is that if it's 3 months old, it gets recycled, no questions. If you want it saved, you better put it away. I don't find that many magazine lying around now.