This is Kat
And she is a part of *insert fandom here* and she saw a post with one of her favorite characters in it. She thought it was so good that she would tag anything that has to do with that fandom in the post, to insure that people will see it. She does not realize that this action is annoying to some that they would want to commit triple homicide. She knows this now and promptly apologizes. Kids, learn from her mistake and do not do this to avoid annoyance in your fandom.
Maybe one day you won’t be the dunce of the fandom, Kat, maybe one day!
Fandom Etiquette, it’s that easy.