Jan 31st 2009 12:52AM @The Claw
the $172m calculation is based on monthly. The $400m earning is yearly. $172m monthly * 12months > $400m / year. The author actually DID take into account that some part of the world didn't pay that much:
"But we know that a lot of folks have discount plans, and the charge isn't the same across the globe. I can easily believe a $400 million yearly earning from subscriptions, and am actually surprised it's not higher."