The two sites I visit the most are TPM and TheDailyDish, and Andrew Sullivan seems to have vanished in the past two days, unlike himself, in that he has consistently brought in guest bloggers during previous breaks he's taken.  After becoming a bit concerned (especially with his last posting being simply an image of some flowers) and rooting around a bit, which led to posted rumors that he's been fired for going too full bore into the dicier aspects of the horror that is the candidacy of Sarah Palin, I found a posting from his colleague Marc Ambinder who says Andrew is simply taking a break:

http://marcambinder.theatlantic.com/archives/2008/09/andrew_sullivan.php.

Just thought others here might be interested.