I went to the link below to look at some of the apps. I clicked Top Free tab and scanned through the featured apps. As Google puts it: “This is a showcase for some of the featured and top ranked applications and games available on Android Market”.
Note the spelling in some of these top downloads:
via Android.com – Market.
It’s Android so it’s open (to copyright violations).
I should note that if these free apps are monetized through Google’s ad network there seems, to my untrained eye, a clear legal liability.