Twitter now has a dedicated page on their @earlybird service that is designed to deliver new offers and schemes from partners.
Twitter @earlybird Exclusive Offers are special time-bound deals, sneak-peeks, and events that are promoted by the official Twitter @earlybird account. We partner with select advertisers and ReTweet offers that they have crafted only for the Twitter community. Our advertising partners determine the terms of the offer, including availability, amount, and price. As with other forms of advertising from Twitter, we are focused on bringing value to our users and will keep your interests in mind as we develop this program.