It looks obvious that if I've already seen an item in inbox without opening the inbox proper, the notification should be dismissed since it's of no use anymore. (if it's not obvious to you, please specify)
The main question is: what reliable technical ways to determine that I have read the corresponding item you can think of?
As of this writing, I've come with these:
- Clicked on the link "load N more comments" if the item is among them
- Clicked on "the post has been edited" for an edit notification