Reactions are SBC's form of likes. They were introduced to give more variety to the simple like system once used. Currently there are six available: Happy, Sad, Funny, Confused, Thanks, Wow, and God Himself. Users get a notification every time someone reacts to their post.
Current Reactions
Like
The original react. Self-explanatory.
Happy
Happy features a picture of Plankton. Typically used for good news or general nice things happening.
Sad
Sad is a picture of Mr. Krabs playing the violin. Used for sad things happening or as a way to show disapproval.
Funny
Funny is a picture of Sandy laughing. It was one of the two new reacts added to replace Meh.
Confused
Confused is a picture of the famous surprised Patrick. This is the only react to not give out Reputation.
Thanks
Thanks is a picture of SpongeBob saluting. Self-explanatory.
Wow
Wow is Reg's famous tattoo from the Salty Spitoon. It's the other of the two reacts that replaced Meh.
God Himself
God Himself is a picture of the almighty Jackie Chan. He can be used as sort of a "super-like" for things that are stupendously godly.
Hug
Hug is the newest reaction, and was added on December 2, 2018. It is a picture of SpongeBob and Patrick hugging over a tub of ice cream, and is used to show a sort of love or togetherness.
Former Reactions
Meh
Meh was a picture of Squidward. He was used to signify dislike, disapproval or indifference. After a fight broke out on the SBC's Top 50 Best Episodes Ever! 2018 Edition thread, it was removed. This react also inspired hilaryfan80 to attempt to file a restraining order against Homie.