Ben Brooks makes a great point that I had not considered:
> As for the worry of ‘low-traffic’, well Apple addressed that yesterday — ensuring that the Mac App Store will forever have high traffic: they made the Mac App Store the only place to get your OS updates for OS X, putting a notice in the Notification Center when you need to check for updates. Every Mac user will have to go into the Mac App Store from time to time, and I am certain many will click over to see what apps are featured. I can’t think of a better way to assure an app store of continued traffic.