According to the United Airlines Twitter page, as soon as they reach 10,000 followers, they will provide folks a small token of their appreciation. A free first class flight anywhere in the world? Lifetime elite status? 100,000 free miles? Probably none of those. But still, something (we don't know what exactly) for nothing. United - It's time to Tweet.
As of 11:00 PM Saturday, they were at 4441 followers.