[obstinate]

You don't have to comment to do this. You can:

1. Click on "X (seconds|minutes|hours) ago"

2. Click on favorite.

Or:

1. Install Google Keep bookmarklet.

2. Click on "X (seconds|minutes|hours) ago".

3. Click on the bookmarklet to save a link to the comment to Google Keep.

I hope one of these suggestions proves useful to you.

[alphapapa]

Hm, we should file an issue on $browser's $bugtracker requesting something like...I dunno, what should we call it...a "bookmarks" feature?

[astrodust]

Maybe you could build that as a service, some kind of system that could "sync" those between devices.