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XKCD (properly stylized as xkcd) is a webcomic that was created by Randall Munroe. The comic's tagline describes it as a "A webcomic of romance, sarcasm, math, and language" (formerly a "Stick-figure strip featuring humor about technology, science, mathematics and relationships"). The comic frequently covers subjects such as technology and science. XKCD is available under the Creative Commons Attribution-NonCommercial 2.5 License.
XKCD has been criticized multiple times for a variety of reasons. The most common criticism is its "reddit" style of humor, which often involves puns, randomness, and smarminess. The comic has also been criticized for its over-simplistic style that can seem immature.
Most /tech/ies and /g/uys dislike the comic because of the author's siding with the SJWs during Gamer Gate and that many of the comics express the very liberal political ideals of the artist. For example, in 2014, a comic commenting on Gamer Gate was released that said that expressing an opinion is fine, but being an ass justifies a ban from places such as Twitter. This specific comic has been modified multiple by the users of /g/ and /tech/ times to say "If you can't handle conflicting opinion, go back to your hug box" to redditors and other outsiders.