Hangouts keeps you connected
You can send and receive messages and make video calls from the Hangouts app on your computer, mobile phone, or tablet. Hangouts are automatically synced, so you can start a Hangout on one device and continue it on another. Download Hangouts: http://www.google.com/hangouts/
Google Opinion Rewards
Google Opinion Rewards is a new app for Android that gives you Google Play credits for answering simple surveys.