Google enabled multiple sign-in accounts today. So what? So what?? I’ll tell you so what. That means that with my personal Google Account, my professional school related Google Account, and the Google account I have through our district’s Google Apps account, I can be signed in to all three at the same time. Perfect for work productivity (personal) collaboration with colleagues (professional), and checking student work (Apps acct.) There are some limitations though, so make sure you check the fine print here.