Author Brian K. Vaughan took over the Panel Syndicate Twitter feed yesterday to answer questions. He shared info on his past and upcoming projects (including a "Y for yes" on whether there's been movement on that Y: The Last Man adaptation!!), but he also dispensed a wise bit of writing advice.
Also, he hasn't worked with an editor in five years; his advice to anyone with writer's block is "Stop fucking around. Motors stall, writers procrastinate"; he has a hard time coming up with names for characters; and this: