Rexblog revenue model: Today, Amazon.com announced that rexblog users can now subscribe to over 50,000 magazines, newsletters and newspapers by clicking on the box at left. Whenever you purchase a subscription, I get some S&H greenstamps. I’m saving up for a bicycle or a transistor radio. My first prediction: Amazon.com will soon become the largest single source of subscriptions for the magazine industry. My second prediction: The next time you decide to subscribe to a magazine, you will visit the rexblog amazon.com associate store.