I am developer from Indonesia that is currently living in Thailand. In both countries (and I suspect in many Asian countries), people just use a Chat/Social Package (Facebook, Yahoo, Gtalk, BBM) and Mail Package (Mail, BBM). Any other connection is restricted by the network provider. You can also get the full package (unlimted connection), but it is usually much more expensive.
If I make an app for Google+, most users wont be able to connect to Google's server, so the user base for the app will be small. So I am waiting for RIM to create Google+ for BlackBerry phones.
But I think someone will make an app for PlayBook soon.
