Follow United Airlines on Twitter to Receive 15% off Cert

Be one of the first 50,000 followers of United Airlines on Twitter, and you'll receive a discount certificate for up to 15% off future travel. According to the terms of the offer, the amount of the discount will depend on how quickly the airline reaches the 50,000 goal. The e-cert is valid on most published United airfares between August 15 and November 17, 2009. Click here to sign up.