I used to get 10 different car magazines....I'm now down to two: car and driver, and this one. One for generic automotive news to keep apace with the times, and the other about things I actually am interested in haha.
I've had good luck selling boxes of them on ebay. The last hoard went for $25 and freed up a ton of space when I moved.
I have thousands of old magazines that I would love to do something with. I have GRMs since AutoX, every Road and Track from the late '40's to early '90's, and most Sports Car Graphics from the '60's. Also Alfa Owners from the late '80's early '90's. It would pain me to throw them out, and selling them on Ebay would seem to take more time than they are worth.