Xkcd webcomic on online sexism

Today on the brilliant nerdy webcomic xkcd: a trenchant and very funny commentary on online sexism, especially as practiced in the techier corners of the net.

Link

See also:
Cory Doctorow cosplayers at the XKCD picnic
Geeky comic strip uses Cory as the punchline
Geeky comic about chess and roller-coasters
Xkcd fans bring chess-sets on roller-coasters

Nerd humor about Katamari Damacy
Bloggin' 'bout my generation
Pi joke
Funny map of online communities in the style of a D&D map
Sarcastic comic about computational linguistics (and emo kids)
Where LOLCats come from
Ironic Internet malapropism grid