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The Notifications button in the upper-right corner of Google+ tells you how many unread notifications you have by highlighting this number in red. Figure 9.1, for example, shows three unread notifications.
Figure 9.1. Your number of unread notifications is highlighted in red.
Note: Why Isn’t the Notifications Button Red?
If you don’t have any unread notifications, the button displays the number zero (0) and isn’t highlighted in red. You can still click the Notifications button to view previously read notifications.
To view and react to your notifications, follow these steps:
1. Click the Notifications button in the upper-right corner of any Google+ page (refer to Figure 9.1). Figure 9.2 shows some sample notifications. Google+ groups your notifications by type, such as notifications that let you know someone added you to a circle.