DU is built on hate and fear. With their guy in the White House and Democrat control of Congress, there's very little the DUmp monkeys will be able to blame on Republicans, at least for the next two years.
I expect that since there is less hate to throw around, DU will start losing posters at a rapid pace. They will either willingly leave, or comment that the Messiah is not acting the way they expect him to and get tombstoned.
Either way, without Bush, there's little reason for the DUmp to exist.
I give it a year. Next October I see $kinner making a major contribution drive and then closing the servers down for good in November.