(internet, slang, derogatory) A n00b; an inexperienced member of the 4chan community (or any other online community).
2008, 11 July, Onideus Mad Hatter username, BTW Lego Newfag, Oh, also, using Outhouse Express...yeah, really shows off what a Usenet newfag you are, just a lil FYI for ya. You might wanna try XNews or Agent or any *REAL* news browser (not a mail client with some sloppily added extras).
2009, 28 March, darthmark username, http://groups.google.com/group/rec.arts.anime.misc/msg/ce6c41e3cdc9c7e9?hl=en-GB&dmode=source|Re: I Love 1997
2011, Cole Stryker, Epic Win for Anonymous: How 4chan's Army Conquered the Web, The Overlook Press (2011), ISBN 9781590207383, unnumbered pages:Many veteran users bemoaned that the newfags were only interested in trolling, and cared not for meme creation and ultranerdy culture.