And now, I will tell you one more privacy settings in Google Plus. After read this post, you can disable or enable comments on any posts of your stream. Unfortunately until now there's no way to disable/enable comments for all posts together in one single click. Hope in the next update Google will launch this feature.
Let's begin!
Disable Comments on Google Plus Posts
Step 1: Log in to your Google+ account.
Step 2: Find which post you want to disable its comments. You can see it on your Stream although Profile page is more simple to find it. Just click on menu tab:
Step 3: Now you can see one small inverted triangle icon at the top right side of post. Click on it for expand.
Step 4: After expand this button click on Disable comments option to stop allowing comments from your friends on your selected post.
Now your friends will no longer can post their comments on your post and the "Comment" link disappear.
Enable Comments on Google Plus Posts
To revert it back, just do the same thing. Click on the small inverted triangle and click on Enable comments, then the "Comment" link will appear again.
Just it. Enjoy!