I like the idea, in the spirit of socializing on wiki concepts within social I'm a fan of doing tweets like this and using the "DYK" or "Did you know" terminology/pattern at the start of the post. Looks like we have room to do either version at the front of this (though I haven't actually checked that yet).
context, if you haven't seen it before which I imagine you have, is the
front page of English Wikipedia has cycling content under the header of "Did you know". It's content that is cycled every 8 hours and presents new or newly updated articles on the project nominated by the community members.