DU's new rules
Hard to pick a favorite, but I particularly get a kick out of the prohibition on "Highly speculative 'conspiracy theory' topics outside the September 11 forum."
Other taboos include:
Broadly suggesting that there is no difference between Barack Obama and George W. Bush, or that there is no difference between Democrats and Republicans. (Arguing that specific policies are the same would be permitted.)
Suggesting that President Obama has perpetrated a "con job" or "fraud," or similarly over-the-top assertions of bad faith.
What motivated the new terms?
The DU Administrators have long been frustrated with the persistent undercurrent of negativity and conflict here, which has been exacerbated by the lack of a common villain in the form of George W. Bush.
Isn't that what Sarah Palin is for? Look, over there!