As many as four million people may crowd the mall at inauguration. That sound you hear is 600,000 DC residents dialing Travelocity to make travel plans elsewhere.
Meanwhile, the exciting local question is: do you or don't you rent out a room, or your whole house? The answer for me is easy: my landlord would kill me. But those in larger buildings or houses can attract hundreds of dollars a night for their room--it looks to be pretty easy to make a couple of month's rent during inauguration week.