Comment view now also includes entries for when something was changed; for example when a video was first added, if it was updated, when, and by whom.
Hover over the timestamp to see the exact time it happened.
See also: click the user avatar to see the old versions of videos and scripts.
This gives more context to the comments: if the comment was made after or before the video was changed, etc. This gives a deeper understanding on what has changed in the past.
Advertisers can see how the video evolved based on feedback received.
Lead dev: @Ville Saukkonen