The "Twitter sweepstakes" application has been improved with the addition of Premium Sweepstakes, available for customers with a Premium plan ($159US/month), which presents the following new features:

• The Reweets Sweepstakes extend the limits and allow sweepstakes with the following characteristics:
  • Unlimited number of Retweets.
  • Tweets of up to 30 days can be used.
• 2 more types of sweepstakes are added:
  • Hashtags + Mention sweepstakes.
  • Replies sweesptakes.

More information.