Here's the intro to that SR article. I'm a bit of a magazine packrat myself.
Motorcyclist
Cycleworld
SportRider
Rider
Bike
American Motoryclist
BMWON
Citybike
Motorcycle Consumer News
RoadRacer X
RoadracingWorld
Car & Driver
Road & Track
Automobile
AutoWeek
I used to keep them all forever, but a year or two back I ran out of space, so I got rid of all but the most recent 5 years. Every year now I get rid of a years worth of 6 year old mags, which makes space for the new year.
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Good article! Definitely worth the read.