I think the larger point the author was making is that Google has a massive installed base of Mobile OS users, through its Android platform: "Google will seek m

I think the larger point the author was making is that Google has a massive installed base of Mobile OS users, through its Android platform: "Google will seek more and more ways to make your Android phone a seemless appendage of your Google+ social platform." Google+'s iPhone app is coming soon, and in the meantime you can access its web app through your browser: http://www.google.com/mobile/+/ http://www.google.com/mobile/+/ Facebook just has mobile apps, and no mobile browser or OS (at least, so far). This positions Google+ fairly well in its efforts to build a social networking beachhead to compete with FB.