Everything we know so far about Facebook's new reactions

We'll probably never get a true "dislike" button on Facebook, but the social network just started to roll out the closest thing we've seen yet.

Reactions, a new feature for Facebook's ubiquitous Like button that allows you to respond to posts with emoji, will go live for some Facebook users Friday, the company announced Thursday.

Here a look at everything we know about it so far.

How does it work?

The easiest way to think about Reactions is as an extension of the existing Like button. The feature works with any post on Facebook where you see the Like button. Long pressing (or hovering over it with your mouse if you're on a desktop browser) will open up a panel of six different reactions you can add to a post. The first is, of course, "like," followed by "love," "haha," "yay," "wow," "sad" and "anger." Read more...