If DC didn't just open this Twitter account, then it's just sad. You create a Twitter account, don't post a single update and waste as many as 602 followers.
Mind you, I am aware they have DC Nation, but how many people possibly signed up for DC Comics and stopped looking for a DC-related Twitter account? Especially since DC Comics isn't even following DC Nation.
I guess, on the positive side, they're finally getting around to adopting a tool that Marvel's been using excellently for over half a year (if not a full year, given Agent M's work).