a)the Wired article that says 70% are still on 1.5/6 is from 9 months ago. Figures from November 2010 indicate that 75% of users are running 2.1/2.2: http://gizmodo.com/5679410/over-70-of-android-phones-are-now...
b) Google has since implemented some antipiracy measures on the app store.I'm less certain about its details/market penetration, but it exists in some form
c) android now has a lot more than 10 million handsets.