YouTube will soon switch to Google+ comments. So the comments from people in your circle (friend-list) will rise up where you can see them.
When it comes to the conversations happening on YouTube, recent does not necessarily mean relevant. So, comments will soon become conversations that matter to you. In the coming months, comments from people you care about will rise up where you can see them, while new tools will help video creators moderate conversations for welcome and unwelcome voices. Starting this week, you'll see the new YouTube comments powered by Google+ on your channel discussion tab. This update will come to comments on all videos later this year, as we bring you more ways to connect with familiar faces on YouTube.
Screenshot of the new comments section: