Is it somehow possible to turn off Google Plus notification about new photos/videos has been Automatically backed up? Maybe it is just consequence of the in-Google Platform event in the Google's web notification box. In that case is it possible to disable Google notifying me about that at all?
Open the Google+ application and go to account settings > Notifications > and uncheck "Photos added from Auto Backup".
On Android, I enabled back-up of my photos, but Google is forcing me to see these annoying notifications (and it's creating stories and Auto Awesome mods to my photos).
The notifications come via Google+, so I see them on iOS, Android and the web interface of Google+. Read more about how this is annoying others.
The work-around I found so far is to disable all notifications in Google+ app.
I confirmed my settings on Android and PC to be off for "Auto awesome." Yet, Google+ still is creating the "new story" notifications after uploading photos with backup on Android. Something is not right in their software. Maybe they are simply making us "pay" for backups by subjecting us to notifications? This inspires me to shun Google+ even more.