Since YouTube switched to Google+ comments, comments can be viewed and replied to under the Google bell notification icon (also goofily known as +Mr. Jingles). The notifications bell is visible on the top right of the screen when you are signed into your Google account and using most Google products, including Google Search, Blogger, Google Drive, Gmail and (of course) YouTube.
But if you want the option to easily read and reply to YouTube and Google+ comments from wherever you are surfing on the web - and are using the Chrome browser - you can install the Google+ Notifications extension to immediately see new notifications from wherever you are online.
1. When you have a new notification the bell icon will turn black with a red number indicating the number of new notifications. The bell is black if there are old notifications you haven't dismissed.
2. Click the bell icon and you will see a list of your unread notifications:
3. Click on the comment or post you want to reply to and type your response in the comment box.
4. Click Post comment, and you're done!
It's easy, especially if your YouTube channel is connected to your personal Google+ Profile.
There is a catch if your YouTube channel is connected to a Google+ Page. You will need to be signed into your YouTube channel and Google+ Page's Google account directly in Chrome for the Notification extension to work. That means you will first need to set a password for your Google+ Page, then sign in with your Page's username - either the automatically created @pages.plusgoogle.com address or an added @gmail.com email.
While that is an added step, it's worth setting up if you primarily use your YouTube channel's Google+ Page identity online.
Install the Google+ Notification extension from the Chrome Web Store:
Learn how to set up multiple user accounts in your Chrome browser:
Set a password for your Google+ Page:
There are significant limitations to the Google+ notifications bell. Your YouTube comments and replies to your posts are all mixed together with +1s and people adding you to their circles and whatnot. And if your videos get a lot of comments, it may not be practical to answer them as they are posted.
You can always review and respond to all the incoming comments on your videos and channel on your YouTube Comments page (www.youtube.com/comments) or your individual video comment pages.
Posted by Peggy K