vw, if you mean Christian Kane's return to Angel several weeks back, I agree that would've qualified as a spoiler and I enjoyed it all the more as a surprise. Regarding a new DS, if someone should get their hands on a script, or be present at filming, or have access to the network feed a few days before a broadcast, information shared as a result should absolutely be treated as a spoiler. For other situations, however, such as casting announcements and character outlines, the moderators aren't going to be adding spoiler warnings, so if you don't want to read about such things I can only recommend you avoid the topics about the new series, sorry.
And I apologize for not answering your question sooner about the spoiler code, but we had no way of knowing if MB was going to be able to get an SE forum working or if it would have to be converted to the SMF version, and so reinstalling the SE mods wasn't a big priority. But as you can see, MB has been a very busy bee overnite.