I always get that question in the popup in the upper left corner asking this. After reading about it, I  still don't know what it does. Do you allow notifications and what is it for?

You can be notified if someone "Likes" a post or quotes something you have written.

 

I get them, makes it easy to keep up with the replies and if someone responds to you. 

My desktop always has it popping up. I ignore it or x out of it. It just started doing it like a week or so ago to me.  I have always got the red bell notification at the top right corner of my screen.  And I get many emails about every contest so I don't know why it needs me to give concent when it has no problems sending those emails. 

 

Just another software genius somewhere and or another lawsuit result somewhere haha