When you comment on a Facebook post, whether that of a friend or someone in a group, you're automatically subscribed to receive notifications for every single new comment. If you aren't a fan of this, you won't like what Facebook added to this feature.

To ensure that you don't miss a single comment on certain posts, you'll now see a popup tab with new comments on posts that Facebook thinks you care about. The tab mimics a chat window, but instead is a series of threaded comments on the original post.

It's unclear how Facebook determines which posts matter to you, but you can disable this feature if you want. And even if you have yet to see this popup appear, you can preemptively stop Facebook from deciding for you what matters most.

To disable this feature, click the gear icon in the bottom-right corner beneath your chat sidebar and click Turn Off Post Tabs.

This option should appear whether you have chat turned on or off, but if you've hidden the Facebook sidebar, you'll have to click the gear icon twice - once to turn on the sidebar, and again to pull up the menu.

If you change your mind and find that you really do need these notifications after all, you can easily turn them back on in the same menu.

If you really don't want to engage at all, you can also disable notifications for posts you've commented on, but unfortunately you have to do that each time you comment. After you comment on a post, scroll to the top of the post, click the little arrow in the right hand corner and click Turn off notifications for this post from the menu.

You can always keep track of what you've commented on in your activity log instead. To view your activity log, just follow this URL:

            http://facebook.com/me/allactivity
    

What do you think of Facebook's pop-up for notifications? Love it or hate it? Let us know in the comments.