Google during its I/O keynote hit a symbolic milestone: it now has 600,000 apps in the Google Play Store. As well, the store is clearly hitting a brisk pace in adoption, with 1.5 billion downloads every month and 20 billion since Android began. DevelopingGoogle Play hits 600,000 apps, 20 billion total installs originally appeared on Engadget on Wed, 27 Jun 2012 13:16:00 EDT. Please see our