On The Majority Report (Garofalo's show) today, they announced that, between noon Wednesday and the end of Friday -- less than three days -- 2 million people listened to Air America through AirAmericaRadio.com. This excludes everyone who listened on the radio or through other streaming sources like KPOJ 620 Portland's popular stream.
For a comparison, 6 million people listen to Stern on the radio each week.