A person who is obsessed with hunting down "posers" in an attempt to make themselves look cool and "real." Finding these people on the internet is unavoidable. Sometimes they will actually give up liking something just to not let other people mistake themselves for a poser! Of course, then they miss out. Cutting of the nose to spite the face, eh? (Yes, I AM Canadian.)
Posee: I love <insert topic here> so much! But it's getting annoying that real fans like me HAVE to put up with those annoying posers who are always like "I love that too!" but they are not really fans like me. I smashed my <insert topic memorabilia here> and stopped being a fan because posers annoyed me so much.