Warbler said:

that is not what I was talking about.

You know when go on to youtube and you watch a video? Below the video are comments people make about the video. Where on Google+ do you go to see those comments?

On the Google+ page for the uploader. Here's an example from YouTuber "Tuxedo Mark". https://plus.google.com/102191678969705810740/posts Those are comments on his YT videos, on Google+.

"Well what about MY YouTube comments? Where can I see those on Google+?" is what you're no doubt thinking. My answer: Don't know.