10:1710:17, 10 November 2009diffhist−68
m
Xkcd
other webcomic articles mention their popularity and leave it at that - very curious readers can always check the citations for more detail
10:1710:17, 10 November 2009diffhist−68
m
Xkcd
other webcomic articles mention their popularity and leave it at that - very curious readers can always check the citations for more detail