Today Facebook started rolling out reactions. Reactions are substitute for "Likes", so instead of liking a post you can love it, wow it, sad, haha, or happy. This is slowly rolling out to everyone. If you have it then all you have todo is hover over the like button with your mouse and the other options should show up. 
If you don't see it yet, just wait and it will show up at some point. Now Facebook has said they may add more reactions over time and I'm sure they will add some for special times of year or big time sponsors. What would be cool is if they had an API for it so brands can maybe us it to make their own reactions.
I think this is a fun new thing for Facebook and it fixes the problem the "Like" doesn't work for everything. If a friends grandma dies "Liking" the post doesn't seem right but sad might be a better option. So if you have this enjoy and if you don't have it yet just be patient.
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