Through June 30, Mileage Plus members can enter to win one million miles or $25,000. The only problem with this sweepstakes is that you need to re-enter every day to increase your probability of winning. The promotion is valid for residents of several countries. Just go to http://www.united.com/win and click on the appropriate country flag. We never quite grasped what United is trying to do with this promotion. Perhaps the company is trying to update its database and this is the best way of doing that.