Capital One launched its Venture Double Miles Challenge, which allows consumers to earn double miles, up to 100,000, for every dollar they spent on a major travel rewards credit card in 2011. To receive the bonus double miles, consumers must be approved for a Venture card, register for the challenge, and provide a 2011 year-end summary for their current travel rewards credit card. New cardholders are eligible for the bonus miles when they spend $1,000 on their Venture Card within 90 days of approval. This promotion is available on a first-come, first-serve basis. Click here for more information.