You may have noticed that Google+ is now available for our district (and all other K12 domains). You can join by clicking on the "+You" button at the top left of your screen when you're in Gmail or Calendar or Drive. Why would you do this? What can you do with Google+ with your students or in your classroom? Here's an article from Larry Ferlazzo that lists dozens of resources and ideas to get you started with Google+ in education.
larryferlazzo.edublogs.org/2011/07/10/the-best-resources-for-learning-what-google-is-all-about/