I was getting a notification bar if I received any badge.
But I have noticed that I didn't see any notification bar for the last 2-3 badges, including:
Where did bar of notification for receiving badges go?
You are looking at this place on the page for that information, right?
Sorry if my choice of image capturing tool blinds some of you with overlay text :p
Thanks to @jadarnel27 for pointing out the URL on the blog post for me.
From this blog post, it indicates the orange bar notifying you of your recent badges has been removed.
You can still see all your notifications (including badges) by clicking on the global notification icon and then selecting the notifications option.
If you want to view your most recent badges, you can click on the arrow next to your name to display your recent stats. Any badges you've received recently will be indicated at the bottom of the window (see highlight).