In response to several inquiries received recently, submissions to the Tales of New Babbage project can include 1) poetry, 2) chapters of larger novels (or novels in progress), 3) radio scripts, and 4) rewritten blog posts from the Reader (or Ning). They can also include pieces published previously in other collections.
Let me know if anyone else has any other questions! And don’t forget to pre-order your copy on the Kickstarter project, or (if you really want to make an impression) contribute extra to have your name (or your avatar’s name) included in the dedication section up front.
Oh and here’s one of the cover art ideas being kicked around: