For those people who haven't heard, it may be worth shooting them an email to find out. There's a problem, sometimes, with their emails getting through.
(I originally applied to DS last November, never got a response, figured it was a rejection and just forgot about it. Then I got an email from them last month, inviting me to come back, or something like that -- even though I had never gotten an acceptance from them in the first place! So something must have been screwed up with the mail for that. Then, after I did start writing stuff for them, I wasn't getting any of the emails I was supposed to -- and found out, eventually, that the phone-company ISPs were blocking DS's mass mailings -- I switched my address with DS to a gmail address -- now everything is working ok.) The moral of the story -- if you haven't heard from them, you might have already been accepted, but the email telling you that got lost in the void.