It looks like Vertigo‘s Twitter account is in the advertising business, as around 4pm today, the DC Comics imprint tweeted a message promoting Viz Media‘s new graphic novel All You Need is Kill, the adaptation of the novel that is being turned into a movie. They were nice enough to mark it with a hashtag of “ad.” Going back a few months, I don’t see another example of this, the account has promoted either Vertigo projects (or things related to them) or DC things. Nice to see publishers getting along!