MyOpera makes it possible to write an article in advance and then set the date and time when it should become available for public. I haven't used this feature often but yesterday I realized it would make it possible to edit articles collaboratively on groups, before the story being published.
However, I'm not sure how this works together with other social media sharing features. For example, I hope the story does not become noticed on Twitter before it is actually available.
So, this is a test to find out how it actually works. This post should come available 2011-11-07 5 PM UTC, no sooner, no later.
EDIT: Another problem maybe is that the time becomes changed when I edit the post. Therefore one may have to set the time again whenever post becomes edited.
EDIT: Tested, and the date set on first editing stays :up: