Facebook really, really wants you to get into virtual reality - after all the social network paid a lot of money to buy up Oculus Rift a few years back.
One of the problems right now is that a regular desktop experience isn't particularly immersive in VR, with the same scrolling pages and limited interactivity. So the company is also investing heavily in bringing new elements to the table, especially 360 degree videos and photos.
You've probably noticed them popping up in your feeds more frequently and there's no denying that being able to peer around in any direction is a very new and exciting way to consume content.
Well Facebook doesn't just want you to consume, it also wants you to interact - so it's bringing reactions to VR.
You'll use your head to look at a point in space that's used to like something and then the extra reactions will pop up - pretty much like pressing and holding on desktop or mobile. Now you can tell people how you really feel about their 360 degree surfing video while you're sitting at your desk.