[infogulch]

I didn't see it mentioned but it looks like you can now 'react' to comments, a la facebook. So you could choose one reaction, say, "Horray!", and use it as a marker that you resolved it.

Now I wonder if the commenter is notified on every reaction. The only thing that might make this more difficult.

[positr0n]

That would also be missing a filter to show all unresolved comments, which is a huge use case. (Or maybe you can do that, if you can it is not very quick and intuitive).

[cheshire137]

> Now I wonder if the commenter is notified on every reaction.

I don't think the commenter is notified about reactions to their comments.