It's great that when I stop the video and make a comment, with the box clicked, it automatically puts the linkable frame at the start of the comments. However when it isn't precisely the frame I am referring to, it takes a few extra seconds to scrub to find the exact frame so that it appears correctly. I was surprised that I couldn't manually write in the frame, or edit the frame number that the comment is referring to.
It's great that I can click on the blue numbers and go right to play the video at the frame indicated. And I like that I can leave comments that don't refer to a frame number at all.