What is Namefag?
1.
Term used on 4chan for people who post using a name instead of simply post as "anonymous" like most others do. Usually used as in insult.
Namedude: I didn't really like that movie.
Anonymous: STFU namefag, that movie was awesome!
See
2.
A term used by our good friends on 4chan do describe anyone who post using a name other than "Anonymous"
Generally used in arguments.
Bob:"Narutois the best show ever!"
Anonymous: "STFU namefag, Naruto is for kids!"
See