Xkcd

xkcd, sometimes stylized as XKCD, is a webcomic created by Randall Munroe. The comic's tagline describes it as "a webcomic of romance, sarcasm, math, and language." Munroe mentions on the website that the name of the comic isn't an acronym but in fact "just a word with no phonetic pronunciation." It has received mention from The Guardian and The New York Times.

The subject matter of the comic varies, including statements on life and love (some love strips are simply art with poetry), and mathematical or scientific in-jokes. Some strips feature simple humor or pop-culture references. Although it has a cast of stick figures, the comic occasionally features landscapes, intricate mathematical patterns such as fractals (for example, strip No. 17 "What If" shows an Apollonian gasket), or imitations of the style of other cartoonists (as during "Parody Week").

The comic is available under the Creative Commons Attribution-NonCommercial 2.5 License. New comics are added three times a week, on Mondays, Wednesdays, and Fridays; although, on some occasions they have been updated every weekday.

Since July 2012, there has been a branch off of xkcd called "xkcd What-If", updated every Tuesday. These attempt to answer unusual reader submitted science questions in a humorous, though mathematically sound way, doing so in a format much more akin to an article.